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Artículos de revistas sobre el tema "Multinuclear organotin"

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Publicado: 18 de mayo de 2024

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1

Cherryman, Julian C. y Robin K. Harris. "New Multinuclear Experiments on Solid Organotin Fluorides". Journal of Magnetic Resonance 128, n.º 1 (septiembre de 1997): 21–29. http://dx.doi.org/10.1006/jmre.1997.1206.

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2

Rashid, Faisal, Noor Uddin, Saqib Ali, Ali Haider, Syed Ahmad Tirmizi, Paula L. Diaconescu y Jamshed Iqbal. "New triorganotin(iv) compounds with aromatic carboxylate ligands: synthesis and evaluation of the pro-apoptotic mechanism". RSC Advances 11, n.º 8 (2021): 4499–514. http://dx.doi.org/10.1039/d0ra06695h.

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Three new organotin(iv) carboxylate compounds were synthesized and structurally characterized by elemental analysis and FT-IR and multinuclear NMR (1H, 13C, 119Sn) spectroscopy.
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3

Matela, Garima y Robina Aman. "Organotin(IV) complexes of carboxylic acid derivatives". Open Chemistry 10, n.º 1 (1 de febrero de 2012): 1–15. http://dx.doi.org/10.2478/s11532-011-0107-6.

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AbstractA comprehensive review, >100 references, on organotin(IV) complexes of the carboxylic acid derivatives are presented with special reference to their methods of synthesis, spectroscopic and structural studies and their biological activities. The structures of these complexes are discussed on the basis of IR, multinuclear (1H-, 13C- and 119Sn-) NMR.
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4

Tagne Kuate, Alain C., Roger A. Lalancette y F. Jäkle. "Planar-chiral ferrocenylphosphine-borane complexes featuring agostic-type B–H⋯E (E = Hg, Sn) interactions". Dalton Transactions 46, n.º 19 (2017): 6253–64. http://dx.doi.org/10.1039/c6dt04791b.

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Ferrocenylphosphine-borane adducts with Lewis acidic organotin and organomercury substituents inortho-position show rare agostic-type B–H⋯E (E = Sn, Hg) interactions that have been studied by single crystal XRD, multinuclear solution NMR, and computational methods.
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5

Singh, Har Lal y A. K. Varshney. "Synthetic, Structural, and Biochemical Studies of Organotin(IV) with Schiff Bases Having Nitrogen and Sulphur Donor Ligands". Bioinorganic Chemistry and Applications 2006 (2006): 1–7. http://dx.doi.org/10.1155/bca/2006/23245.

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Three bidentate Schiff bases having nitrogen and sulphur donor sequences were prepared by condensing S-benzyldithiocarbazate (NH2NHCS2CH2C6H5) with heterocyclic aldehydes. The reaction of diphenyltin dichloride with Schiff bases leads to the formation of a new series of organotin(IV) complexes. An attempt has been made to prove their structures on the basis of elemental analyses, conductance measurements, molecular weights determinations, UV, infrared, and multinuclear magnetic resonance (H1,C13, andS119n) spectral studies. Organotin(IV) complexes were five- and six-coordinate. Schiff bases and their corresponding organotin complexes have also been screened for their antibacterial and antifungal activities and found to be quite active in this respect.
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6

Shahid, Khadija, Saira Shahzadi y Saqib Ali. "Synthesis, coordination and biological aspects of organotin(IV) derivatives of 4-[(2,4-dinitrophenyl)amino)]-4-oxo-2-butenoic acid and 2-{[(2,4-dinitrophenyl)amino]carbonyl}benzoic acid". Journal of the Serbian Chemical Society 74, n.º 2 (2009): 141–54. http://dx.doi.org/10.2298/jsc0902141s.

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New series of organotin(IV) complexes of aniline derivatives, R2SnL2 and R3SnL [where R = Me, n-Bu, Ph, n-Oct] have been synthesized by the reaction of HL1 and HL2 with respective organotin halides or oxides. Experimental details for the preparation and characterization (including elemental analysis, IR and multinuclear NMR (1H-, 13C- and 119Sn-) spectra in CDCl3 and EI mass spectra of both series are provided. The binding sites of the ligands were identified by means of FTIR spectroscopic measurements. It was found that in all cases the organotin(IV) moiety reacts with the oxygen of COO- group to form new complexes. In the diorganotin complexes, the COO- group is coordinated to the organotin(IV) centres in a bidentate manner in the solid state. The 119Sn NMR data and the nJ(13C-119/117Sn) coupling constant support the tetrahedral coordination geometry of the organotin complexes in non-coordinating solvents. Biological activities (antibacterial, antifungal, cytotoxicity, antileishmanial and insecticidal) of these compounds are also reported.
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7

Said, Musa A., C. Hemavathi, S. Nagabrahmanandachari, K. C. Kumara Swamy, Damodara M. Poojary y A. Clearfield. "Syntheses and structures of new mono and multinuclear organotin phosphinates". Proceedings / Indian Academy of Sciences 108, n.º 3 (junio de 1996): 298. http://dx.doi.org/10.1007/bf02870065.

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8

Sabiha Khanam, Sabiha Khanam, Khadija Shahid Khadija Shahid, Muhammad Sirajuddin Muhammad Sirajuddin y Saqib Ali and Hameed Ullah Saqib Ali and Hameed Ullah. "Synthesis, Spectral Characterization and Biological Evaluation of Organotin(IV) Complexes of Aniline Derivatives of Naturally Occurring Betulinic Acid". Journal of the chemical society of pakistan 41, n.º 4 (2019): 725. http://dx.doi.org/10.52568/000785/jcsp/41.04.2019.

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Betulinic acid (triterpene) has shown an immense potential towards the development of anticancer, antiviral, antimalarial, antifungal, antioxidant and antiprotozoal agents. Cis-platin (cytotoxic agent) has diverted attention of chemists towards organotin complexes with marked pharmacological activities. In present work aniline derivatives of Betulinic acid were synthesized followed by the synthesis of diorganotin and triorganotin metal complexes. These complexes were characterized by FT-IR and multinuclear NMR (1H and 13C) spectroscopy. The ligands and their organotin(IV) complexes were screened for antibacterial, antifungal and antioxidant activities. Compound L22SnMe2 was found with maximum antibacterial activity among the screened compounds. Compounds L12SnMe2 and L12SnPh2 were found with remarkable antifungal activity. Similarly L1, L12SnBu2, L2 and L22SnMe3 were remarked with good antioxidant activity.
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9

Shariatinia, Zahra, Ebadullah Asadi, Vahid Tavasolinasab y Khodayar Gholivand. "Nanoparticles of novel organotin(IV) complexes bearing phosphoric triamide ligands". Beilstein Journal of Nanotechnology 4 (12 de febrero de 2013): 94–102. http://dx.doi.org/10.3762/bjnano.4.11.

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Four novel organotin(IV) complexes containing phosphoric triamide ligands were synthesized and characterized by multinuclear (1H, 31P, 13C) NMR, infrared, ultraviolet and fluorescence spectroscopy as well as elemental analysis. The 1H NMR spectra of complexes 1–4 proved that the Sn atoms adopt octahedral configurations. The nanoparticles of the complexes were also prepared by ultrasonication, and their SEM micrographs indicated identical spherical morphologies with particles sizes about 20–25 nm. The fluorescence spectra exhibited blue shifts for the maximum wavelength of emission upon complexation.
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10

Hussain, Shabbir, Saqib Ali, Saira Shahzadi, Muhammad Nawaz Tahir, Muhammad Shahid, Khurram Shahzad Munawar y Syed Mustansar Abbas. "Synthesis, spectroscopy, single crystal XRD and biological studies of multinuclear organotin dicarboxylates". Polyhedron 117 (octubre de 2016): 64–72. http://dx.doi.org/10.1016/j.poly.2016.05.045.

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11

Da Silva Santos, Ane Francielly y José Roberto Da Silveira Maia. "ANTIMICROBIAL EFFECT OF ORGANOTIN COMPOUNDS DERIVED FROM PHENOLIC SCHIFF BASES". Journal of Engineering and Exact Sciences 5, n.º 5 (20 de diciembre de 2019): 0452–59. http://dx.doi.org/10.18540/jcecvl5iss5pp0452-0459.

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Several organotin(IV) derivatives of phenolic Schiff bases were prepared and investigated by spectroscopic methods. These compounds were bioassayed to evaluate their bacterial effect against Gram-positive (Staphylococcus aureus and Bacillus subtilis) and Gram-negative (Escherichia coli and Salmonella typhimurium) microorganisms. Dimeric and monomeric compounds were characterized by infrared in solid state. Metallic centers having penta-, hexa-, and heptacoordination were identified by multinuclear NMR (1H, 13C and 119Sn) in solution. The di- and triorganotin(IV) derivatives were also investigated by conductimetric measurements in methanol, elemental analysis and melting point. The bioassay of these tin(IV) compounds showed that the best resulting activity was against S. aureus for the triphenyltin(IV) phenolic Schiff base derivatives, presenting MICs of 1.1 µM (0.6 mg mL-1) and 2.2 µM (1.3 mg mL-1).
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12

Chagas, Rafael César Russo, José Roberto da Silveira Maia y Vany P. Ferraz. "Synthesis and characterisation of organotin(IV) derivatives of ambidentate ligands containing nitrogen and sulphur donor atoms". Main Group Metal Chemistry 34, n.º 5-6 (1 de diciembre de 2011): 131–37. http://dx.doi.org/10.1515/mgmc-2012-0904.

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Abstract A series of organotin(IV) derivatives of bis(pyrimidin-2-ylthio)methane (ptm), 1,2-bis(pyrimidin-2-ylthio)ethane (pte) and 1,6-bis(pyrimidin-2-ylthio)hexane (pth) have been prepared in dichloromethane at room temperature. The 2:1 (M/L) molar ratio compounds have a general formula of [Sn2ClxPh8-xL] (x=2, 4, 6, 8; L=ptm, pte and pth). A 1:1 complex was also obtained by reacting SnClPh3 with pth. The organotin derivatives were characterised by multinuclear NMR (1H, 13C and 119Sn) and infrared spectroscopy, gel permeation chromatography (GPC), microanalysis and melting point. In the triphenyltin derivatives, 1, 5, 9 and 10 the tin atoms show a distorted trigonal-bipyramidal configuration where the ligand is monodentate towards the metal atom. In the compounds 2–4, 6–8 and 11–13, the tin atoms each exhibit a distorted octahedral configuration. Chelation is formed between the tin nucleus and the coordinating sulphur and nitrogen atoms. The correlation between the 1J(13C-119Sn) and C-Sn-C bond angle indicates formation of 5-coordinate compounds.
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13

Yusof, Enis Nadia Md, Muhammad A. M. Latif, Mohamed I. M. Tahir, Jennette A. Sakoff, Michela I. Simone, Alister J. Page, Abhi Veerakumarasivam, Edward R. T. Tiekink y Thahira B. S. A. Ravoof. "o-Vanillin Derived Schiff Bases and Their Organotin(IV) Compounds: Synthesis, Structural Characterisation, In-Silico Studies and Cytotoxicity". International Journal of Molecular Sciences 20, n.º 4 (15 de febrero de 2019): 854. http://dx.doi.org/10.3390/ijms20040854.

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Six new organotin(IV) compounds of Schiff bases derived from S-R-dithiocarbazate [R = benzyl (B), 2- or 4-methylbenzyl (2M and 4M, respectively)] condensed with 2-hydroxy-3-methoxybenzaldehyde (oVa) were synthesised and characterised by elemental analysis, various spectroscopic techniques including infrared, UV-vis, multinuclear (1H, 13C, 119Sn) NMR and mass spectrometry, and single crystal X-ray diffraction. The organotin(IV) compounds were synthesised from the reaction of Ph2SnCl2 or Me2SnCl2 with the Schiff bases (S2MoVaH/S4MoVaH/SBoVaH) to form a total of six new organotin(IV) compounds that had a general formula of [R2Sn(L)] (where L = Schiff base; R = Ph or Me). The molecular geometries of Me2Sn(S2MoVa), Me2Sn(S4MoVa) and Me2Sn(SBoVa) were established by X-ray crystallography and verified using density functional theory calculations. Interestingly, each experimental structure contained two independent but chemically similar molecules in the crystallographic asymmetric unit. The coordination geometry for each molecule was defined by thiolate-sulphur, phenoxide-oxygen and imine-nitrogen atoms derived from a dinegative, tridentate dithiocarbazate ligand with the remaining positions occupied by the methyl-carbon atoms of the organo groups. In each case, the resulting five-coordinate C2NOS geometry was almost exactly intermediate between ideal trigonal-bipyramidal and square-pyramidal geometries. The cytotoxic activities of the Schiff bases and organotin(IV) compounds were investigated against EJ-28 and RT-112 (bladder), HT29 (colon), U87 and SJ-G2 (glioblastoma), MCF-7 (breast) A2780 (ovarian), H460 (lung), A431 (skin), DU145 (prostate), BE2-C (neuroblastoma) and MIA (pancreatic) cancer cell lines and one normal breast cell line (MCF-10A). Diphenyltin(IV) compounds exhibited greater potency than either the Schiff bases or the respective dimethyltin(IV) compounds. Mechanistic studies on the action of these compounds against bladder cancer cells revealed that they induced the production of reactive oxygen species (ROS). The bladder cancer cells were apoptotic after 24 h post-treatment with the diphenyltin(IV) compounds. The interactions of the organotin(IV) compounds with calf thymus DNA (CT-DNA) were experimentally explored using UV-vis absorption spectroscopy. This study revealed that the organotin(IV) compounds have strong DNA binding affinity, verified via molecular docking simulations, which suggests that these organotin(IV) compounds interact with DNA via groove-binding interactions.
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14

Diallo, Waly, Libasse Diop, Cheikh Abdoul Khadir Diop, Hélène Cattey y Laurent Plasseraud. "Synthesis, spectroscopic study, and crystal structure of a new organotin(IV) selenate derivative". Main Group Metal Chemistry 41, n.º 5-6 (27 de noviembre de 2018): 183–88. http://dx.doi.org/10.1515/mgmc-2018-0029.

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Abstract The polymeric organotin(IV) selenate complex [(Me3Sn)3(SeO4)(OH)]n (1) has been isolated as single crystals from the reaction of [(Me2NH2)2SeO4] and Me3SnCl in methanol. In the solid state, compound 1 was characterized by X-ray diffraction analysis, Fourier transform-infrared spectroscopy, and elemental analysis. 1 crystallizes in the orthorhombic system space group Pbca with a=11.0231(2) Å, b=16.3461(3) Å, c=20.9945(4) Å, α=β=γ=90°, V=3782.89(12) Å3, and Z=8. Its structure can be described as a polymeric zigzag chain based on Me3Sn moieties linked by tridentate selenate anions. Pendant (Me3Sn)2OH groups are also connected to the chain, according to a syndiotactic organization, and via Sn-O-Se bonds. Intermolecular OH···O hydrogen bonds and long Se-O···Sn distance interactions promote the association of chains together and lead to the propagation of a three-dimensional network. In addition, the behavior of 1 in solution (methanol) was also studied by multinuclear nuclear magnetic resonance spectroscopy and mass spectrometry.
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15

Iftikhar, Syed, Syeda Gilani, Babar Taj, Ahmad Raheel, U. Ud-Din-Imtiaz, Syed Termizi, Mundher Al-Shakban y Hapipah Ali. "Design, synthesis and biological evaluation of organotin(IV) complexes of flumequine and cetirizine". Journal of the Serbian Chemical Society 83, n.º 4 (2018): 425–37. http://dx.doi.org/10.2298/jsc161203070i.

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Six new organotin(IV) derivatives [Me3SnL1] (1), [Bu3SnL1] (2), [Ph3SnL1] (3), [Me3SnL2] (4), [Bu3SnL2] (5) and [Ph3SnL2] (6) (where HL1 = = 9-fluoro-6,7-dihydro-5-methyl-1-oxo-1H,5H-pyrido[3,2,1-ij]quinoline-2-carboxylic acid (flumequine) and HL2 = 2-[2-[4-[(4-chlorophenyl)phenylmethyl]- -1-piperazinyl]ethoxy] acetic acid (cetirizine)) were synthesized and characterized by elemental analysis, FT-IR spectroscopy, multinuclear 1H-, 13C- and 119Sn-NMR, mass spectrometry and thermal analysis techniques. The obtained data reveal trigonal-bipyramidal geometry in case of complexes 1, 2, 4 and 5, and tetrahedral geometry for complexes 3 and 6 around the tin atom, whereas in complexes 3 and 6 the carboxylate ligand act as monodentate ligand through one of its oxygen atoms while it acts as bidentate ligand through two oxygen atoms for complexes 1, 2, 4 and 5. The antibacterial and antifungal efficacies of complexes 1?6 were assessed and the majority of the compounds showed good activities. The present research showed that the trimethyltin(IV) derivatives were particularly more effective than tributyltin(IV) and triphenyltin(IV) derivatives against all the bacterial and fungal strains. Antioxidant and DNA binding studies were also performed and promising results were obtained.
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16

Howell, GN, MJ Oconnor, AM Bond, HA Hudson, PJ Hanna y S. Strother. "Methylmercury Generation in Seawater by Transmethylation Reactions of Organolead and Organotin Compounds With Inorganic Mercury as Monitored by Multinuclear Magnetic-Resonance and Electrochemical Techniques". Australian Journal of Chemistry 39, n.º 8 (1986): 1167. http://dx.doi.org/10.1071/ch9861167.

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The generation of methylmercury species by reactions between inorganic mercury and methylated forms of lead and tin in seawater and other matrices is described. The reactions were investigated by 119Sn, 199Hg and 207Pb multinuclear Fourier transform magnetic resonance spectroscopy and by differential pulse polarography and anodic stripping voltammetry. Methylmercury chloride is shown to be produced from mixtures of inorganic mercury with methyltin or methyllead species over the 10-2-10-8 M concentration range at ambient temperatures in seawater and artificial seawater.
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17

Singh, Har Lal y J. B. Singh. "Synthesis and Characterization of New Lead(II) and Organotin(IV) Complexes of Schiff Bases Derived from Histidine and Methionine". International Journal of Inorganic Chemistry 2012 (8 de febrero de 2012): 1–7. http://dx.doi.org/10.1155/2012/568797.

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New Schiff base (HL) ligand is prepared via condensation of isatins and amino acids in 1:1 molar ratio. Metal complexes are prepared and characterized by elemental analysis, molar conductance, electronic, infrared, and multinuclear magnetic resonance (1H NMR, 13C NMR, and 119Sn NMR). The analytical data showed that the ligand acts as bidentate toward metal ions via azomethine nitrogen and carboxylate oxygen by a stoichiometric reaction of metal : ligand (1 : 2) to from metal complexes (Pb(II)(L)2 and Bu2Sn(L)2, where L is the Schiff base ligands of histidine and methionine). The conductivity values between 15 and 25 Ω−1cm2 mol−1 in DMF imply the presence of nonelectrolyte species. On the basis of the above spectral studies, distorted octahedral and tetrahedral geometry have been proposed for the resulting organotin(IV) and lead(II) complexes.
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18

Danish, Muhammad, Saqib Ali, Muhammad Mazhar, Amin Badshah, M. Iqbal Choudhary, Helmut G. Alt y Gerald Kehr. "Mössbauer, multinuclear magnetic resonance and mass spectrometric studies of organotin carboxylates of m-methyltrans-cinnamic acid". Polyhedron 14, n.º 20-21 (septiembre de 1995): 3115–23. http://dx.doi.org/10.1016/0277-5387(95)00080-c.

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19

Nath, Mala, Hitendra Singh, George Eng y Xueqing Song. "Interaction of 5′-Guanosine Monophosphate with Organotin(IV) Moieties: Synthesis, Structural Characterization, and Anti-Inflammatory Activity". ISRN Organic Chemistry 2012 (9 de diciembre de 2012): 1–9. http://dx.doi.org/10.5402/2012/873035.

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Reaction(s) of 5′-guanosine monophosphate (5′GMP) with di- and triorganotin(IV) chloride(s) led to formation of organotin(IV) derivatives of general formulae, [R2Sn(5′-GMP)·H2O]n and [(R′3Sn)2(5′-GMP)·H2O]n, where R = Me, n-Bu, and Ph; R′ = Me, i-Pr, n-Bu, and Ph; (5′-GMP)2− = 5′-guanosine monophosphate. An attempt has been made to prove the structures of the resulting derivatives on the basis of FT-IR, multinuclear 1H, 13C, and 119Sn NMR and 119Sn Mössbauer spectroscopic studies. These investigations suggest that both di- and triorganotin(IV)-5′-guanosine monophosphates are polymeric in which (5′-GMP)2− is bonded through phosphate group resulting in a distorted trigonal bipyramidal geometry around tin. The ribose conformation in all of the derivatives is C3′-endo, except diphenyltin(IV) and tri-i-propyltin(IV) derivatives where it is C2′-endo. All of the studied derivatives exhibited mild-to-moderate anti-inflammatory activity (~15.64–20.63% inhibition) at 40 mg kg−1 dose and LD50 values > 400 mg kg−1 in albino rats.
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20

Pantelic, Nebojsa, Martina Lerbs, Katharina Wolf, Ludger Wessjohann y Goran Kaludjerovic. "In vitro anticancer evaluation of novel triphenyltin(IV) compounds with some N-acetyl-S-naphthoquinonylcysteine derivatives". Journal of the Serbian Chemical Society 84, n.º 10 (2019): 1119–27. http://dx.doi.org/10.2298/jsc190322032p.

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Triphenyltin(IV) compounds with naphthoquinone derivatives containing N-acetylcysteine, N-acetyl-S-(1,2-dion-4-naphthyl)cysteine (1,2-NQC), 1, and N-acetyl-S-(1,4-dion-2-naphthyl)cysteine (1,4-NQC), 2, were synthesized and characterized by elemental microanalysis, IR, multinuclear (1H, 13C, 119Sn) NMR spectroscopy as well as HR-ESI mass spectrometry. With the aim of in vitro anticancer activity determination of ligand precursors and novel synthesized organotin(IV) compounds against human cervix adenocarcinoma (HeLa), human colon carcinoma (HT-29), and melanoma carcinoma cell line (B16F10), MTT colorimetric assay method was applied. The results indicate that synthesized compounds exhibited remarkable antiproliferative activity toward all tested cell lines with IC50 in the range of 0.17 to 0.87 ?M. Complex 1 showed the greatest activity against HT-29 cells, with IC50 value of 0.21 ? 0.01 ?M, 119 times better than cisplatin, while complex 2 demonstrated the highest activity toward HeLa cells, IC50 = 0.17 ? 0.01 ?M, which is ~26 times better than cisplatin.
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21

García y García, Patricia, María del Carmen Pérez-Redondo, Perla Román-Bravo, Miguel-Angel Reyes-González, Irma Linzaga-Elizalde, Marcela López-Cardoso, Patricia Martínez-Salas, Gabriela Vargas-Pineda, Ave María Cotero-Villegas y Raymundo Cea-Olivares. "Synthesis, multinuclear (1H, 13C, 31P, 119Sn) NMR and structure of new optically active organotin(IV). O,O'-di-(−)-menthyldithiophosphates". Main Group Chemistry 11, n.º 2 (2012): 165–74. http://dx.doi.org/10.3233/mgc-2012-0070.

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22

Willem, Rudolph, Monique Biesemans, Pascale Jaumier y Bernard Jousseaume. "Comparative assessment of weak intramolecular coordinations at tin in functionalized mono-organotin trichlorides and mono-organotrialkynyltins by multinuclear solution NMR". Journal of Organometallic Chemistry 572, n.º 2 (enero de 1999): 233–38. http://dx.doi.org/10.1016/s0022-328x(98)00944-9.

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23

Parveen, Bushra, Iftikhar Bukhari, Saira Shahzadi, Saqib Ali, Shabbir Hussain, Kulsoom Ali y Muhammad Shahid. "Synthesis and spectroscopic characterization of mononuclear/binuclear organotin(IV) complexes with 1H-1,2,4-triazole-3-thiol: Comparative studies of their antibacterial/antifungal potencies". Journal of the Serbian Chemical Society 80, n.º 6 (2015): 755–66. http://dx.doi.org/10.2298/jsc140711010p.

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A series of di and triorganotin(IV) complexes of the general formula, R2(Cl)SnL (R= Me: 1; Bu: 2) and R3SnL (R = Bu: 3; Ph: 4) have been synthesized by refluxing equivalent molar ratios of orgnotin(IV) chlorides (R2SnCl2/R3SnCl) with the 1H-1,2,4-Triazole-3-thiol (LH) in dry methanol. The synthesized complexes (1-4) were further treated with CS2 and R2SnCl2/R3SnCl in 1:1:1 molar ratio to yield the homobimetallic complexes of the types R2(Cl)SnLCS2Sn(Cl)R2 (R = Me: 5; Bu: 6) and R3SnLCS2SnR3 (R = Bu: 7; Ph: 8). The ligand and the complexes have been characterized by elemental microanalysis (CHNS), FT-IR and multinuclear NMR (1H&13C), and electron ionization mass spectrometry. IR data demonstrates that the dithiocarbamate donor site of the ligand acts in a bidentate manner and there isa trigonal bipyramidal geometry around Sn(IV) in solid state. 1H and 13C NMR data supports the tetrahedralgeometry with thiol donor sites of the ligand while tetra and penta coordinated environments around dithiocarboxylate bound tin(IV) in solution state. Mass spectrometric data supported well the structures of the synthesized complexes. The homobimetallic derivatives were found more active than mononuclear organotin(IV) compounds and free ligand against various strains of bacteria and fungus.
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24

Debnath, Pratima, Paresh Debnath, Manojit Roy, Lesław Sieroń, Waldemar Maniukiewicz, Tamanna Aktar, Debasish Maiti, Alexander S. Novikov y Tarun Kumar Misra. "Novel Organotin(IV) Complexes of 2-[4-Hydroxy-3-((2-hydroxyethylimino)methyl)phenylazo]benzoic Acid: Synthesis, Structure, Noncovalent Interactions and In Vitro Antibacterial Activity". Crystals 12, n.º 11 (7 de noviembre de 2022): 1582. http://dx.doi.org/10.3390/cryst12111582.

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Three new organotin(IV) complexes, [Me3Sn(H2L)]2 (1), Bu3Sn(H2L) (2), and [(Bu2Sn(H2L))2O]2 (3) were synthesized by the reaction of 2-[4-hydroxy-3-((2-hydroxyethylimino)methyl)phenylazo]benzoic acid (H3L) with appropriate alkyltin(IV) precursors. The complexes were characterized by elemental analysis, IR, and multinuclear (1H, 13C and 119Sn) NMR spectroscopy. Further, the complex 1 was analyzed by single-crystal X-ray analysis. It displays a 24-membered cyclic dimeric Me3SnIV(H2L) unit where the ligand act as a bridging framework using its carboxylate-O and phenoxy-O atoms. The Sn(IV) adopts distorted trigonal-bipyramidal geometry. In the solution state, the structures were determined by 119Sn-NMR spectroscopy, and the complexes 1 and 2 have distorted tetrahedral geometry, whereas complex 3 shows distorted trigonal-bipyramidal geometry around the tin centres. The Hirshfeld surface analysis and DFT calculations, together with a topological analysis of the electron density distribution in the crystal structure of complex 1, indicate that its molecular packing determined by various noncovalent interactions, including stacking and hydrogen bonding. The antibacterial studies of the ligand and the complexes (1–3) against gram-negative bacteria viz. Klebsiella pneumoniae (A),Vibrio cholerae (M) and Shigella boydii (Q) and gram-positive bacteria viz.Staphylococcus aureus (J), Streptococcus pneumonia (K) are promising and the compounds can be treated as potential common antibacterial materials.
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25

Sadiq-ur-Rehman, Saqib Ali y Saira Shahzadi. "Organotin(IV) esters of (E)-3-furanyl-2-phenyl-2-propenoic acid: Synthesis, investigation of the coordination modes by IR, multinuclear NMR (1H,13C,119Sn) and In Vitro biological studies". Heteroatom Chemistry 19, n.º 6 (septiembre de 2008): 612–20. http://dx.doi.org/10.1002/hc.20488.

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26

Endo, Kohei, Mika Ogawa y Takanori Shibata. "Multinuclear Catalyst for Copper-Catalyzed Asymmetric Conjugate Addition of Organozinc Reagents". Angewandte Chemie International Edition 49, n.º 13 (23 de febrero de 2010): 2410–13. http://dx.doi.org/10.1002/anie.200906839.

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27

Endo, Kohei, Mika Ogawa y Takanori Shibata. "Multinuclear Catalyst for Copper-Catalyzed Asymmetric Conjugate Addition of Organozinc Reagents". Angewandte Chemie 122, n.º 13 (23 de febrero de 2010): 2460–63. http://dx.doi.org/10.1002/ange.200906839.

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28

Endo, Kohei, Mika Ogawa y Takanori Shibata. "ChemInform Abstract: Multinuclear Catalyst for Copper-Catalyzed Asymmetric Conjugate Addition of Organozinc Reagents." ChemInform 41, n.º 32 (23 de julio de 2010): no. http://dx.doi.org/10.1002/chin.201032086.

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29

Endo, Kohei, Daisuke Hamada, Sayuri Yakeishi, Mika Ogawa y Takanori Shibata. "Multinuclear Cu-Catalysts Based on SPINOL-PHOS in Asymmetric Conjugate Addition of Organozinc Reagents". Organic Letters 14, n.º 9 (20 de abril de 2012): 2342–45. http://dx.doi.org/10.1021/ol300748d.

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30

Endo, Kohei, Sayuri Yakeishi, Daisuke Hamada y Takanori Shibata. "Functionalized BINOL-mono-PHOS for Multinuclear Cu-Catalysts in Asymmetric Conjugate Addition of Organozinc Reagents". Chemistry Letters 42, n.º 5 (5 de mayo de 2013): 547–49. http://dx.doi.org/10.1246/cl.130080.

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31

Endo, Kohei, Daisuke Hamada, Sayuri Yakeishi, Mika Ogawa y Takanori Shibata. "ChemInform Abstract: Multinuclear Cu-Catalysts Based on SPINOL-PHOS in Asymmetric Conjugate Addition of Organozinc Reagents." ChemInform 43, n.º 34 (26 de julio de 2012): no. http://dx.doi.org/10.1002/chin.201234062.

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32

Endo, Kohei, Takanori Shibata y Ryotaro Takayama. "BINAM-mono-PHOS as New Entry for Multinuclear Copper Catalysts in Asymmetric Conjugate Addition of Organozinc Reagents". Synlett 24, n.º 09 (23 de abril de 2013): 1155–59. http://dx.doi.org/10.1055/s-0033-1338439.

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33

Endo, Kohei, Sayuri Yakeishi, Daisuke Hamada y Takanori Shibata. "ChemInform Abstract: Functionalized BINOL-mono-PHOS for Multinuclear Cu-Catalysts in Asymmetric Conjugate Addition of Organozinc Reagents." ChemInform 45, n.º 46 (30 de octubre de 2014): no. http://dx.doi.org/10.1002/chin.201446105.

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34

Endo, Kohei, Ryotaro Takayama y Takanori Shibata. "ChemInform Abstract: BINAM-mono-PHOS as New Entry for Multinuclear Copper Catalysts in Asymmetric Conjugate Addition of Organozinc Reagents." ChemInform 44, n.º 39 (5 de septiembre de 2013): no. http://dx.doi.org/10.1002/chin.201339070.

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35

Ribot, François O., Delphine Minoux y Clément Sanchez. "An Organotin Oxo-Carboxylate Cluster Functionalized by Triethoxysilyl Groups". MRS Proceedings 628 (2000). http://dx.doi.org/10.1557/proc-628-cc2.2.

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ABSTRACTThe organotin oxo-carboxylate cluster {BuSnO(O2CC6H4-4-NH2)}6 (1), which exhibits a hexagonal prismatic oxo-core, was synthesized from BuSnO (OH) and p-aminobenzoic acid. Its peripheral functionalization with triethoxysilyl moieties was achieved through the reaction with 3-isocyanatopropyltriethoxysilane (ICPTES) which preserves the oxo-carboxylate framework and yields {BuSnO[O2CC6H4-4-NHC (O)NH (CH2)3Si (OEt)3]}6 (2). Both compounds were characterized by multinuclear NMR (119Sn, 1H, 13C, 29Si).
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36

Jiang, Wujiu, Zhijian Zhang, Penghui Ni y Yuxing Tan. "Self-assembly synthesis of diorganotin complexes base on arylformylhydrazone possessing ONO donor set: anticancer activity and mechanism". Metallomics, 30 de marzo de 2022. http://dx.doi.org/10.1093/mtomcs/mfac021.

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Abstract Fourteen new organotin(IV) complexes were successfully synthesized and characterized by elemental analyses, FT-IR, Multinuclear (1H, 13C and 119Sn) NMR spectroscopy, HRMS and X-ray single-crystal techniques. Crystallographic data showed the complexes (1b, 2b, 3b and 5b) were macrocyclic compounds, 4b exhibits a one-dimensional spiral chain structure with distorted trigonal bipyramidal geometry, other complexes were centrosymmetric dimer and there was a Sn2O2 four-membered ring in the middle of the molecule, respectively. In vitro anticancer activity against three human tumor cell lines NCI-H460, MCF-7 and HepG2 were studied, and the dibutyltin complex 5a is a more potent antitumor agent than other complexes and cisplatin. Cell apoptosis study of 5a with the highest activity on HepG2 cancer cell lines was investigated by flow cytometry, it was shown that the antitumor activity of 5a was related to apoptosis, and it was inhibited proliferation by blocking cells in the G2/M phase. The single cell gel electrophoreses assay results show that the 5a induces DNA damage. The 5a interact with ct-DNA by intercalating the mode of interaction. UV-visible absorption spectrometry, fluorescence competitive, viscosity measurements, and gel electrophoresis results also support the intercalative mode of interaction for the 5a with DNA.
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KHOSA, MUHAMMAD KALEEM, MUHAMMAD MAZHAR, SAQIB ALI y SARIM DASTGIR. "Synthesis, characterisation, and structural elucidation by spectral investigation (FT-IR, multinuclear NMR, mass spectrometry) of biologically active organotin(IV) compounds containing germanium". Turkish Journal of Chemistry, 1 de enero de 2010. http://dx.doi.org/10.3906/kim-0904-10.

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