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Artículos de revistas sobre el tema "Metal Coordination Chemistry"

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Autor: Grafiati
Publicado: 7 de septiembre de 2023

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1

Salzer, A. "Nomenclature of Organometallic Compounds of the Transition Elements (IUPAC Recommendations 1999)". Pure and Applied Chemistry 71, n.º 8 (30 de agosto de 1999): 1557–85. http://dx.doi.org/10.1351/pac199971081557.

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Organometallic compounds are defined as containing at least one metal-carbon bond between an organic molecule, ion, or radical and a metal. Organometallic nomenclature therefore usually combines the nomenclature of organic chemisty and that of coordination chemistry. Provisional rules outlining nomenclature for such compounds are found both in Nomenclature of Organic Chemistry, 1979 and in Nomenclature of Inorganic Chemistry, 1990This document describes the nomenclature for organometallic compounds of the transition elements, that is compounds with metal-carbon single bonds, metal-carbon multiple bonds as well as complexes with unsaturated molecules (metal-p-complexes).Organometallic compounds are considered to be produced by addition reactions and so they are named on an addition principle. The name therefore is built around the central metal atom name. Organic ligand names are derived according to the rules of organic chemistry with appropriate endings to indicate the different bonding modes. To designate the points of attachment of ligands in more complicated structures, the h, k, and m-notations are used. The final section deals with the abbreviated nomenclature for metallocenes and their derivatives.ContentsIntroduction Systems of Nomenclature2.1 Binary type nomenclature 2.2 Substitutive nomenlcature 2.3 Coordination nomenclature Coordination Nomenclature3.1 General definitions of coordination chemistry 3.2 Oxidation numbers and net charges 3.3 Formulae and names for coordination compounds Nomenclature for Organometallic Compounds of Transition Metals 4.1 Valence-electron-numbers and the 18-valence-electron-rule 4.2 Ligand names 4.2.1 Ligands coordinating by one metal-carbon single bond 4.2.2 Ligands coordinating by several metal-carbon single bonds 4.2.3 Ligands coordinating by metal-carbon multiple bonds 4.2.4 Complexes with unsaturated molecules or groups 4.3 Metallocene nomenclature
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2

Krezel, A. y W. Bal. "Coordination chemistry of glutathione." Acta Biochimica Polonica 46, n.º 3 (30 de septiembre de 1999): 567–80. http://dx.doi.org/10.18388/abp.1999_4129.

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The metal ion coordination abilities of reduced and oxidized glutathione are reviewed. Reduced glutathione (GSH) is a very versatile ligand, forming stable complexes with both hard and soft metal ions. Several general binding modes of GSH are described. Soft metal ions coordinate exclusively or primarily through thiol sulfur. Hard ones prefer the amino acid-like moiety of the glutamic acid residue. Several transition metal ions can additionally coordinate to the peptide nitrogen of the gamma-Glu-Cys bond. Oxidized glutathione lacks the thiol function. Nevertheless, it proves to be a surprisingly efficient ligand for a range of metal ions, coordinating them primarily through the donors of the glutamic acid residue.
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3

de Carvalho, Antonio B., Maria A. M. A. de Maurera, José A. Nobrega, Clovis Peppe, Martyn A. Brown, Dennis G. Tuck, Marcelo Z. Hernandes, Elson Longo y Fabricio R. Sensato. "Coordination Chemistry of Br2InCH2Br: Coordination at the Metal Center". Organometallics 18, n.º 1 (enero de 1999): 99–105. http://dx.doi.org/10.1021/om980656p.

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4

Liu, Pengxin, Ruixuan Qin, Gang Fu y Nanfeng Zheng. "Surface Coordination Chemistry of Metal Nanomaterials". Journal of the American Chemical Society 139, n.º 6 (26 de enero de 2017): 2122–31. http://dx.doi.org/10.1021/jacs.6b10978.

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5

Thornton, Peter. "Advances in transition metal coordination chemistry". Polyhedron 16, n.º 23 (septiembre de 1997): 4189. http://dx.doi.org/10.1016/s0277-5387(97)81443-x.

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6

Hui, Joseph K. H. y Mark J. MacLachlan. "Metal-containing nanofibers via coordination chemistry". Coordination Chemistry Reviews 254, n.º 19-20 (octubre de 2010): 2363–90. http://dx.doi.org/10.1016/j.ccr.2010.02.011.

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7

Bröring, Martin. "Coordination polymers built from metal tripyrrin units". Journal of Porphyrins and Phthalocyanines 12, n.º 12 (diciembre de 2008): 1242–49. http://dx.doi.org/10.1142/s1088424608000625.

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This account summarizes recent advances in the coordination chemistry of tripyrrins and related ligands with a special emphasis on the structural chemistry of coordination polymers with such ligands. The tripyrrin ligand is unique in supporting the formation of 1D- and 3D-supramolecular structures from pentacoordinate transition metal ions due to an effective blockage of their sixth coordination site. Linear coordination polymers have been observed with a multitude of bidentate and tridentate bridging ligands like trifluoroacetate, azide, thio- and selenocyanate, and higher order pseudohalides. Homo- and heterodimetallic species have been obtained by the use of cyanometallates and could be characterized structurally in two cases. Besides the covalent coordination bonds, several secondary interactions like hydrogen bonding and π-stacking were found to support these coordination polymers and are demonstrated to allow the preparation of species with functionalized inner surfaces.
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8

Maji, Tapas Kumar y Susumu Kitagawa. "Chemistry of porous coordination polymers". Pure and Applied Chemistry 79, n.º 12 (1 de enero de 2007): 2155–77. http://dx.doi.org/10.1351/pac200779122155.

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Remarkable advances in the recent development of porous compounds based upon coordination polymers have paved the way toward functional chemistry having potential applications such as gas storage, separation, and catalysis. From the synthetic point of view, the advantage is a designable framework, which can readily be constructed from building blocks, the so-called bottom-up assembly. Compared with conventional porous materials such as zeolites and activated carbons, porous inorganic-organic hybrid frameworks have higher potential for adsorption of small molecules because of their designability with respect to the coordination geometry around the central metal ion as well as size and probable multifunctionality of bridging organic ligands. Although rigidity and robustness of porous framework with different degree of adsorption are the most studied properties of metal-organic coordination frameworks, there are few studies on dynamic porous frameworks, which could open up a new dimension in materials chemistry.
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9

Zheng, Heping, Mahendra Chordia, David Cooper, Ivan Shabalin, Maksymilian Chruszcz, Peter Müller, George Sheldrick y Wladek Minor. "Check your metal - not every density blob is a water molecule". Acta Crystallographica Section A Foundations and Advances 70, a1 (5 de agosto de 2014): C1483. http://dx.doi.org/10.1107/s2053273314085167.

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Metals play vital roles in both the mechanism and architecture of biological macromolecules, and are the most frequently encountered ligands (i.e. non-solvent heterogeneous chemical atoms) in the determination of macromolecular crystal structures. However, metal coordinating environments in protein structures are not always easy to check in routine validation procedures, resulting in an abundance of misidentified and/or suboptimally modeled metal ions in the Protein Data Bank (PDB). We present a solution to identify these problems in three distinct yet related aspects: (1) coordination chemistry; (2) agreement of experimental B-factors and occupancy; and (3) the composition and motif of the metal binding environment. Due to additional strain introduced by macromolecular backbones, the patterns of coordination of metal binding sites in metal-containing macromolecules are more complex and diverse than those found in inorganic or organometallic chemistry. These complications make a comprehensive library of "permitted" coordination chemistry in protein structures less feasible, and the usage of global parameters such as the bond valence method more practical, in the determination and validation of metal binding environments. Although they are relatively infrequent, there are also cases where the experimental B-factor or occupancy of a metal ion suggests careful examination. We have developed a web-based tool called CheckMyMetal [1](http://csgid.org/csgid/metal_sites/) for the quick validation of metal binding sites. Moreover, the acquired knowledge of the composition and spatial arrangement (motif) of the coordinating atoms around the metal ion may also help in the modeling of metal binding sites in macromolecular structures. All of the studies described herein were performed using the NEIGHBORHOOD SQL database [2], which connects information about all modeled non-solvent heterogeneous chemical motifs in PDB structure by vectors describing all contacts to neighboring residues and atoms. NEIGHBORHOOD has broad applications for the validation and data mining of ligand binding environments in the PDB.
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10

Kaur, Gurpreet y Richard Hartshorn. "Applications of Coordination Chemistry in Biological Systems". Acta Crystallographica Section A Foundations and Advances 70, a1 (5 de agosto de 2014): C1376. http://dx.doi.org/10.1107/s2053273314086239.

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A novel 2,2′:6′,2″-terpyridine–picolylamine-based bridging ligand has been synthesized and fully characterized using a variety of analysis techniques including single crystal X-ray diffraction. As shown in figure (a), the ligand has both tridentate and bidentate metal binding sites available to coordinate with various metal ions. By varying the size of anions both dinuclear complexes and supramolecular assemblies have been produced. Addition of metal salts containing small anions like halides result in formation of Cu2L and Zn2L dinuclear complexes, figure (b), where one metal ion binds at each of the binding sites of the ligand. The metal ions in these complexes mimic active site of the hydrolytic enzymes and promote phosphatediester hydrolysis of model DNA/RNA compounds. Nearly ten times increase in the rate of hydrolysis of bis(p-nitrophenyl)phosphate (BNPP) is observed in comparison to the parent terpyridine and picolylamine complexes under physiological conditions. Larger anions like PF6-, ClO4-, SO42- , NO3- result in formation of Zn4L4 type squares via. head-to-head and tail-to-tail, HH-TT, (H=tridentate site, T=bidentate site) coordination of the ligand. The octahedrally bound Zn(II) ion between two tridentate sites can be replaced with Fe(II) to prepare Fe2Zn2L4 squares. A flat molecule of terephthalic acid was also deliberately encapsulated in the middle of the Fe2Zn2L4 square as shown in figure (c). The head-to-tail, HT, coordination of the ligand in case of Ni(II) results in formation of decanickel wheels, like [Ni10L10Cl4(H2O)6](Cl)15Br·~140H2O shown in figure (d). Due to the large structure of the molecule X-ray crystallographic studies rather have been quite challenging.
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11

Samanta, Soumen K. "Metal Organic Polygons and Polyhedra: Instabilities and Remedies". Inorganics 11, n.º 1 (9 de enero de 2023): 36. http://dx.doi.org/10.3390/inorganics11010036.

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The field of coordination chemistry has undergone rapid transformation from preparation of monometallic complexes to multimetallic complexes. So far numerous multimetallic coordination complexes have been synthesized. Multimetallic coordination complexes with well-defined architectures are often called as metal organic polygons and polyhedra (MOPs). In recent past, MOPs have received tremendous attention due to their potential applicability in various emerging fields. However, the field of coordination chemistry of MOPs often suffer set back due to the instability of coordination complexes particularly in aqueous environment-mostly by aqueous solvent and atmospheric moisture. Accordingly, the fate of the field does not rely only on the water solubilities of newly synthesized MOPs but very much dependent on their stabilities both in solution and solid state. The present review discusses several methodologies to prepare MOPs and investigates their stabilities under various circumstances. Considering the potential applicability of MOPs in sustainable way, several methodologies (remedies) to enhance the stabilities of MOPs are discussed here.
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12

Kostakis, George E., Ian J. Hewitt, Ayuk M. Ako, Valeriu Mereacre y Annie K. Powell. "Magnetic coordination clusters and networks: synthesis and topological description". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, n.º 1915 (28 de marzo de 2010): 1509–36. http://dx.doi.org/10.1098/rsta.2009.0279.

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With the discovery of the phenomenon of single-molecule magnetism, coordination chemists have turned their attention to synthesizing cluster aggregates of paramagnetic ions. This has led to a plethora of coordination clusters with various topologies and diverse magnetic properties. In this paper, we present ways of describing and understanding such compounds as well as outlining a new approach, which we have recently developed, to describing cluster topology. Our approach is based upon and pays tribute to the huge contribution made to coordination chemistry through the development of the Schläfli symbols for describing architectures. To illustrate the developments that are taking place in modern coordination chemistry, we start with some basic definitions of relevance to what follows. Then we describe approaches to discovering new magnetically interesting 3d/4f clusters, assigning their topological descriptions. Finally, we show how the concepts behind the construction of metal–organic frameworks can be extended to using clusters as nodes in the frameworks to give super metal–organic frameworks.
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13

Mann, Samuel I., Tillmann Heinisch, Thomas R. Ward y A. S. Borovik. "Coordination chemistry within a protein host: regulation of the secondary coordination sphere". Chemical Communications 54, n.º 35 (2018): 4413–16. http://dx.doi.org/10.1039/c8cc01931b.

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14

Onn, Chee S., Anthony F. Hill y Angus Olding. "Metal coordination of phosphoniocarbynes". Dalton Transactions 49, n.º 36 (2020): 12731–41. http://dx.doi.org/10.1039/d0dt02737e.

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Heterobi- and tetrametallic phosphoniocarbyne bridged complexes arise from the reactions of the terminal phosphoniocarbyne [W(CPMe2Ph)(CO)2(Tp*)]PF6 with unsaturated metal centres.
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15

Wang, Qingqing, Jing Cui, Guohui Li, Jinning Zhang, Fenglin Huang y Qufu Wei. "Laccase Immobilization by Chelated Metal Ion Coordination Chemistry". Polymers 6, n.º 9 (15 de septiembre de 2014): 2357–70. http://dx.doi.org/10.3390/polym6092357.

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16

Aromí, Guillem. "METAL-BASED MOLECULAR CHAINS: DESIGN BY COORDINATION CHEMISTRY". Comments on Inorganic Chemistry 32, n.º 4 (julio de 2011): 163–94. http://dx.doi.org/10.1080/02603594.2011.642086.

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17

Qin, Ruixuan, Kunlong Liu, Qingyuan Wu y Nanfeng Zheng. "Surface Coordination Chemistry of Atomically Dispersed Metal Catalysts". Chemical Reviews 120, n.º 21 (13 de agosto de 2020): 11810–99. http://dx.doi.org/10.1021/acs.chemrev.0c00094.

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18

Melikyan, Gagik G. "Propargyl Radical Chemistry: Renaissance Instigated by Metal Coordination". Accounts of Chemical Research 48, n.º 4 (6 de marzo de 2015): 1065–79. http://dx.doi.org/10.1021/ar500365v.

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19

Lippert, Bernhard y Pablo J. Sanz Miguel. "The Renaissance of Metal–Pyrimidine Nucleobase Coordination Chemistry". Accounts of Chemical Research 49, n.º 8 (29 de julio de 2016): 1537–45. http://dx.doi.org/10.1021/acs.accounts.6b00253.

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20

Shore, Sheldon G., David W. Knoeppel, Haibin Deng, Jianping Liu, James P. White y Sung-Ho Chun. "Coordination chemistry of lanthanides with transition metal anions". Journal of Alloys and Compounds 249, n.º 1-2 (marzo de 1997): 25–32. http://dx.doi.org/10.1016/s0925-8388(96)02747-8.

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21

Ma, Zhen, Faith E. Jacobsen y David P. Giedroc. "Coordination Chemistry of Bacterial Metal Transport and Sensing". Chemical Reviews 109, n.º 10 (14 de octubre de 2009): 4644–81. http://dx.doi.org/10.1021/cr900077w.

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22

Hayton, Trevor W., Peter Legzdins y W. Brett Sharp. "Coordination and Organometallic Chemistry of Metal−NO Complexes". Chemical Reviews 102, n.º 4 (abril de 2002): 935–92. http://dx.doi.org/10.1021/cr000074t.

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23

Kaim, Wolfgang. "The transition metal coordination chemistry of anion radicals". Coordination Chemistry Reviews 76 (febrero de 1987): 187–235. http://dx.doi.org/10.1016/0010-8545(87)85004-x.

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24

KAGAN, H. B. y B. RONAN. "ChemInform Abstract: Transition-Metal Coordination Chemistry of Sulfoxides". ChemInform 24, n.º 15 (20 de agosto de 2010): no. http://dx.doi.org/10.1002/chin.199315307.

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25

Vicente, Jose. "ChemInform Abstract: Coordination Chemistry of Metal Enolato Complexes". ChemInform 41, n.º 40 (9 de septiembre de 2010): no. http://dx.doi.org/10.1002/chin.201040233.

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26

Tsantis, Sokratis T., Demetrios I. Tzimopoulos, Malgorzata Holynska y Spyros P. Perlepes. "Oligonuclear Actinoid Complexes with Schiff Bases as Ligands—Older Achievements and Recent Progress". International Journal of Molecular Sciences 21, n.º 2 (15 de enero de 2020): 555. http://dx.doi.org/10.3390/ijms21020555.

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Even 155 years after their first synthesis, Schiff bases continue to surprise inorganic chemists. Schiff-base ligands have played a major role in the development of modern coordination chemistry because of their relevance to a number of interdisciplinary research fields. The chemistry, properties and applications of transition metal and lanthanoid complexes with Schiff-base ligands are now quite mature. On the contrary, the coordination chemistry of Schiff bases with actinoid (5f-metal) ions is an emerging area, and impressive research discoveries have appeared in the last 10 years or so. The chemistry of actinoid ions continues to attract the intense interest of many inorganic groups around the world. Important scientific challenges are the understanding the basic chemistry associated with handling and recycling of nuclear materials; investigating the redox properties of these elements and the formation of complexes with unusual metal oxidation states; discovering materials for the recovery of trans-{UVIO2}2+ from the oceans; elucidating and manipulating actinoid-element multiple bonds; discovering methods to carry out multi-electron reactions; and improving the 5f-metal ions’ potential for activation of small molecules. The study of 5f-metal complexes with Schiff-base ligands is a currently “hot” topic for a variety of reasons, including issues of synthetic inorganic chemistry, metalosupramolecular chemistry, homogeneous catalysis, separation strategies for nuclear fuel processing and nuclear waste management, bioinorganic and environmental chemistry, materials chemistry and theoretical chemistry. This almost-comprehensive review, covers aspects of synthetic chemistry, reactivity and the properties of dinuclear and oligonuclear actinoid complexes based on Schiff-base ligands. Our work focuses on the significant advances that have occurred since 2000, with special attention on recent developments. The review is divided into eight sections (chapters). After an introductory section describing the organization of the scientific information, Sections 2 and 3 deal with general information about Schiff bases and their coordination chemistry, and the chemistry of actinoids, respectively. Section 4 highlights the relevance of Schiff bases to actinoid chemistry. Sections 5–7 are the “main menu” of the scientific meal of this review. The discussion is arranged according the actinoid (only for Np, Th and U are Schiff-base complexes known). Sections 5 and 7 are further arranged into parts according to the oxidation states of Np and U, respectively, because the coordination chemistry of these metals is very much dependent on their oxidation state. In Section 8, some concluding comments are presented and a brief prognosis for the future is attempted.
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27

Elorriaga, David, Blanca Parra-Cadenas, Paula Pérez-Ramos, Raquel G. Soengas, Fernando Carrillo-Hermosilla y Humberto Rodríguez-Solla. "Imidazol(in)ium-2-Thiocarboxylate Zwitterion Ligands: Structural Aspects in Coordination Complexes". Crystals 13, n.º 9 (26 de agosto de 2023): 1304. http://dx.doi.org/10.3390/cryst13091304.

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Azolium-2-thiocarboxylate zwitterion ligands have emerged as a promising class of compounds in the field of coordination chemistry due to their unique structural features and versatile applications. These ligands are characterized by a positively charged azolium ring and a negatively charged thiocarboxylate moiety, making them capable of forming stable coordination complexes with various metal ions. One of the key structural aspects that make these ligands attractive for coordination chemistry is their ability to adopt diverse coordination modes with metal centers. The nature of these ligands enables them to engage in both monodentate and bidentate coordination, resulting in the formation of chelated complexes with enhanced stability and controlled geometry or the formation of polynuclear structures. This versatility in coordination behavior allows for the design of tailored ligands with specific metal-binding preferences, enabling the creation of unique and finely tuned coordination architectures. The azolium-2-thiocarboxylate zwitterionic ligands offer a promising platform for the design of coordination complexes with diverse structural architectures.
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28

Frontera, Antonio y Antonio Bauza. "Metal Coordination Enhances Chalcogen Bonds: CSD Survey and Theoretical Calculations". International Journal of Molecular Sciences 23, n.º 8 (10 de abril de 2022): 4188. http://dx.doi.org/10.3390/ijms23084188.

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In this study the ability of metal coordinated Chalcogen (Ch) atoms to undergo Chalcogen bonding (ChB) interactions has been evaluated at the PBE0-D3/def2-TZVP level of theory. An initial CSD (Cambridge Structural Database) inspection revealed the presence of square planar Pd/Pt coordination complexes where divalent Ch atoms (Se/Te) were used as ligands. Interestingly, the coordination to the metal center enhanced the σ-hole donor ability of the Ch atom, which participates in ChBs with neighboring units present in the X-ray crystal structure, therefore dictating the solid state architecture. The X-ray analyses were complemented with a computational study (PBE0-D3/def2-TZVP level of theory), which shed light into the strength and directionality of the ChBs studied herein. Owing to the new possibilities that metal coordination offers to enhance or modulate the σ-hole donor ability of Chs, we believe that the findings presented herein are of remarkable importance for supramolecular chemists as well as for those scientists working in the field of solid state chemistry.
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29

Hosoyamada, Masanori, Nobuhiro Yanai, Keisuke Okumura, Takayuki Uchihashi y Nobuo Kimizuka. "Translating MOF chemistry into supramolecular chemistry: soluble coordination nanofibers showing efficient photon upconversion". Chemical Communications 54, n.º 50 (2018): 6828–31. http://dx.doi.org/10.1039/c8cc01594e.

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30

Calvo, Jenifer S., Victor M. Lopez y Gabriele Meloni. "Non-coordinative metal selectivity bias in human metallothioneins metal–thiolate clusters". Metallomics 10, n.º 12 (2018): 1777–91. http://dx.doi.org/10.1039/c8mt00264a.

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Mammalian metallothioneins MT-2 and MT-3 contain two metal–thiolate clusters through cysteine coordination of d10 metals, Cu(i) and Zn(ii), and isoform-specific non-coordinating residues control their respective zinc– and copper–thionein character.
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31

Andersson Trojer, Markus, Alireza Movahedi, Hans Blanck y Magnus Nydén. "Imidazole and Triazole Coordination Chemistry for Antifouling Coatings". Journal of Chemistry 2013 (2013): 1–23. http://dx.doi.org/10.1155/2013/946739.

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Fouling of marine organisms on the hulls of ships is a severe problem for the shipping industry. Many antifouling agents are based on five-membered nitrogen heterocyclic compounds, in particular imidazoles and triazoles. Moreover, imidazole and triazoles are strong ligands for Cu2+and Cu+, which are both potent antifouling agents. In this review, we summarize a decade of work within our groups concerning imidazole and triazole coordination chemistry for antifouling applications with a particular focus on the very potent antifouling agentmedetomidine. The entry starts by providing a detailed theoretical description of the azole-metal coordination chemistry. Some attention will be given to ways to functionalize polymers with azole ligands. Then, the effect of metal coordination in azole-containing polymers with respect to material properties will be discussed. Our work concerning the controlled release of antifouling agents, in particular medetomidine, using azole coordination chemistry will be reviewed. Finally, an outlook will be given describing the potential for tailoring the azole ligand chemistry in polymers with respect to Cu2+adsorption and Cu2+→Cu+reduction for antifouling coatings without added biocides.
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32

Park, Yoon Sik, Tae Yeong Kim, Hyunjae Park, Jung Hun Lee, Diem Quynh Nguyen, Myoung-Ki Hong, Sang Hee Lee y Lin-Woo Kang. "Structural Study of Metal Binding and Coordination in Ancient Metallo-β-Lactamase PNGM-1 Variants". International Journal of Molecular Sciences 21, n.º 14 (12 de julio de 2020): 4926. http://dx.doi.org/10.3390/ijms21144926.

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The increasing incidence of community- and hospital-acquired infections with multidrug-resistant (MDR) bacteria poses a critical threat to public health and the healthcare system. Although β-lactam antibiotics are effective against most bacterial infections, some bacteria are resistant to β-lactam antibiotics by producing β-lactamases. Among β-lactamases, metallo-β-lactamases (MBLs) are especially worrisome as only a few inhibitors have been developed against them. In MBLs, the metal ions play an important role as they coordinate a catalytic water molecule that hydrolyzes β-lactam rings. We determined the crystal structures of different variants of PNGM-1, an ancient MBL with additional tRNase Z activity. The variants were generated by site-directed mutagenesis targeting metal-coordinating residues. In PNGM-1, both zinc ions are coordinated by six coordination partners in an octahedral geometry, and the zinc-centered octahedrons share a common face. Structures of the PNGM-1 variants confirm that the substitution of a metal-coordinating residue causes the loss of metal binding and β-lactamase activity. Compared with PNGM-1, subclass B3 MBLs lack one metal-coordinating residue, leading to a shift in the metal-coordination geometry from an octahedral to tetrahedral geometry. Our results imply that a subtle change in the metal-binding site of MBLs can markedly change their metal-coordination geometry and catalytic activity.
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33

Taddei, Marco y Ferdinando Costantino. "Metal Phosphonates and Phosphinates". Crystals 9, n.º 9 (31 de agosto de 2019): 454. http://dx.doi.org/10.3390/cryst9090454.

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The present Special Issue entitled “Metal phosphonates and phosphinates” aims to collect recent and significant research papers on the fascinating chemistry of these two related families of coordination compounds [...]
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34

Lozan, Vasile. "Azoligands as Bridged in Macrocyclic Dinickel Complexes". Chemistry Journal of Moldova 5, n.º 1 (junio de 2010): 7–23. http://dx.doi.org/10.19261/cjm.2010.05(1).01.

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The coordination chemistry of dinickel macrocyclic hexaamine-dithiophenolate complexes of Robson-type with azoligands is presented in this microreview. All complexes have been characterised by IR-,UV/Visspectroscopy, and X-ray crystallography. The bioctahedral transition metal complexes of the type [(L6)Ni2(μ-L')]+ exhibit a rich coordination chemistry since the active coordination site L' is accessible for a wide range of exogenous coligands.
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35

Li, Yang, Chao Zhou, Liqun Xu, Fang Yao, Lian Cen y Guo Dong Fu. "Stimuli-responsive hydrogels prepared by simultaneous “click chemistry” and metal–ligand coordination". RSC Advances 5, n.º 24 (2015): 18242–51. http://dx.doi.org/10.1039/c4ra11946k.

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36

Lemaire, M. T. "Recent developments in the coordination chemistry of stable free radicals". Pure and Applied Chemistry 76, n.º 2 (1 de enero de 2004): 277–93. http://dx.doi.org/10.1351/pac200476020277.

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Several advances in the coordination chemistry of stable free-radical species over the past six years are documented in this review article. Specifically, a number of recent reports focused on the coordination chemistry of chelating nitroxide ligands are highlighted, with an emphasis on enhanced magnetic or optical properties in these complexes. Furthermore, very intriguing recent magnetic and optical studies with one-dimensional nitroxide chain complexes (new "Glauber" chains and chiral magnets) are also discussed. The verdazyls are another family of stable radicals whose coordination chemistry was literally unexplored prior to 1997. A summary of recent reports discussing metal-verdazyl coordination complexes is also presented, followed by an eye to the future of stable radical design and the coordination chemistry of these interesting molecules.
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37

Kong, Lingbing, Rakesh Ganguly, Yongxin Li y Rei Kinjo. "Diverse reactivity of a tricoordinate organoboron L2PhB: (L = oxazol-2-ylidene) towards alkali metal, group 9 metal, and coinage metal precursors". Chemical Science 6, n.º 5 (2015): 2893–902. http://dx.doi.org/10.1039/c5sc00404g.

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38

Frisch, Philipp y Shigeyoshi Inoue. "Lewis base-stabilized silyliumylidene ions in transition metal coordination chemistry". Dalton Transactions 49, n.º 19 (2020): 6176–82. http://dx.doi.org/10.1039/d0dt00659a.

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39

Grasseschi, Daniel, Walner Costa Silva, Ronald de Souza Paiva, Leon Diez Starke y Arley Sena do Nascimento. "Surface coordination chemistry of graphene: Understanding the coordination of single transition metal atoms". Coordination Chemistry Reviews 422 (noviembre de 2020): 213469. http://dx.doi.org/10.1016/j.ccr.2020.213469.

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40

BUCHLER, JOHANN W. "Coordination chemistry of metal tetrapyrrole complexes — unusual geometries and stoichiometries". Journal of Porphyrins and Phthalocyanines 04, n.º 04 (junio de 2000): 337–39. http://dx.doi.org/10.1002/(sici)1099-1409(200006/07)4:4<337::aid-jpp228>3.0.co;2-2.

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Sets of metal tetrapyrrole complexes are presented in which unusual geometries and/or stoichiometries occur as compared with the usual distorted octahedral structures and molar 1:1 ratio of metal and tetrapyrrole ligand normally found in metal complexes of porphyrins, phthalocyanines or other tetrapyrrole ligands (hydroporphyrins, corroles, etc.).
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41

Davies, Alwyn G. y Paul F. McMillan. "Robin Jon Hawes Clark. 16 February 1935—6 December 2018". Biographical Memoirs of Fellows of the Royal Society 68 (8 de enero de 2020): 103–29. http://dx.doi.org/10.1098/rsbm.2019.0037.

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Robin Clark was a distinguished physical/inorganic chemist who made major discoveries in the coordination chemistry of the early transition metals, especially of titanium and vanadium complexes with high coordination numbers (notably seven and eight) and of the structures and physical properties of mixed valence, linear chain and metal–metal bonded compounds. He applied far-infrared spectroscopy to study metal–ligand vibrations systematically and established the technique for structure elucidation of transition metal and main group compounds. He also developed Raman and resonance Raman spectroscopy applied to inorganic compounds and highly coloured solids including mineral samples. That work led to his seminal applications of microbeam Raman spectroscopy for the identification of pigments and other constituents of artworks and historical artefacts, thereby developing a basis for testing their provenance and the identification of forgeries.
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42

Dick, Benjamin L., Ashay Patel y Seth M. Cohen. "Effect of heterocycle content on metal binding isostere coordination". Chemical Science 11, n.º 26 (2020): 6907–14. http://dx.doi.org/10.1039/d0sc02717k.

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43

Watanabe, Kohei, Atsushi Ueno, Xin Tao, Karel Škoch, Xiaoming Jie, Sergei Vagin, Bernhard Rieger et al. "Reactions of an anionic chelate phosphane/borata-alkene ligand with [Rh(nbd)Cl]2, [Rh(CO)2Cl]2 and [Ir(cod)Cl]2". Chemical Science 11, n.º 28 (2020): 7349–55. http://dx.doi.org/10.1039/d0sc02223c.

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44

Mikhailov, Oleg V. "Template Synthesis (Self-Assembly) of Macrocycles: Theory and Practice". Molecules 27, n.º 15 (28 de julio de 2022): 4829. http://dx.doi.org/10.3390/molecules27154829.

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For more than 60 years, in coordination chemistry (and since the beginning of the 21st century, in molecular nanotechnology, too), there has been very significant interest in template synthesis reactions, in which the design of coordination compounds (metal complexes) with complex ligands is carried out not according to the classical scheme [metal ion + ligand → complex], but according to scheme [metal ion + “building blocks” of the future ligand (the so-called ligand synthons or ligsons) → complex] [...]
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45

Jia, Chuandong, Wei Zuo, Dan Zhang, Xiao-Juan Yang y Biao Wu. "Anion recognition by oligo-(thio)urea-based receptors". Chemical Communications 52, n.º 62 (2016): 9614–27. http://dx.doi.org/10.1039/c6cc03761e.

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46

Neu, J. P., P. Di Martino-Fumo, B. Oelkers, Y. Sun, A. Neuba, M. Gerhards y W. R. Thiel. "Playing with Pearson's concept: orthogonally functionalized 1,4-diaza-1,3-butadienes leading to heterobinuclear complexes". Dalton Transactions 47, n.º 29 (2018): 9643–56. http://dx.doi.org/10.1039/c8dt01523f.

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47

Mogensen, Steffen B., Mercedes K. Taylor y Ji-Woong Lee. "Homocoupling Reactions of Azoles and Their Applications in Coordination Chemistry". Molecules 25, n.º 24 (15 de diciembre de 2020): 5950. http://dx.doi.org/10.3390/molecules25245950.

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Pyrazole, a member of the structural class of azoles, exhibits molecular properties of interest in pharmaceuticals and materials chemistry, owing to the two adjacent nitrogen atoms in the five-membered ring system. The weakly basic nitrogen atoms of deprotonated pyrazoles have been applied in coordination chemistry, particularly to access coordination polymers and metal-organic frameworks, and homocoupling reactions can in principle provide facile access to bipyrazole ligands. In this context, we summarize recent advances in homocoupling reactions of pyrazoles and other types of azoles (imidazoles, triazoles and tetrazoles) to highlight the utility of homocoupling reactions in synthesizing symmetric bi-heteroaryl systems compared with traditional synthesis. Metal-free reactions and transition-metal catalyzed homocoupling reactions are discussed with reaction mechanisms in detail.
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48

Heiz, Ueli, Arthur Vayloyan y Ernst Schumacher. "Metal−Metal Coordination Chemistry: Free Clusters of Group 11 Elements with Sodium§". Journal of Physical Chemistry 100, n.º 37 (enero de 1996): 15033–40. http://dx.doi.org/10.1021/jp9609388.

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49

Heiz, Ueli, Ursula Röthlisberger, Arthur Vayloyan y Ernst Schumacher. "Metal-Metal Coordination Chemistry: Free Clusters of Group 12 Elements with Sodium". Israel Journal of Chemistry 30, n.º 1-2 (1990): 147–55. http://dx.doi.org/10.1002/ijch.199000015.

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50

Delaney, Andie R., Benjamin J. Frogley y Anthony F. Hill. "Metal coordination to a dimetallaoctatetrayne". Dalton Transactions 48, n.º 36 (2019): 13674–84. http://dx.doi.org/10.1039/c9dt03041g.

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The ditungstaoctatetrayne [(Tp*)(CO)2WCCCCCCW(CO)2(Tp*)] (Tp* = hydrotris(dimethylpyrazolyl)borate) regioselectively adds extraneous metal–ligand fragments to the internal CC or terminal WC triple bonds leading to new tri-, tetra- or hexametallic assemblies.
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