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Articoli di riviste sul tema "Complex compounds"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 30 luglio 2024

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1

Eichler, Robert, M. Asai, H. Brand, N. M. Chiera, A. Di Nitto, R. Dressler, Ch E. Düllmann et al. "Complex chemistry with complex compounds". EPJ Web of Conferences 131 (2016): 07005. http://dx.doi.org/10.1051/epjconf/201613107005.

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2

Farzaliyev, V. M., M. P. Bayramov, S. Kh Jafarzadeh, P. Sh Mammadova, E. R. Babayev e I. M. Eyvazova. "METAL COMPLEX COMPOUNDS AS EFFECTIVE ADDITIVES TO CUTTING FLUIDS". Chemical Problems 17, n. 1 (2019): 81–86. http://dx.doi.org/10.32737/2221-8688-2019-1-81-86.

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3

Peni, Peni, Risya Sasri e Imelda Hotmarisi Silalahi. "Synthesis of Metal–Curcumin Complex Compounds (M = Na⁺, Mg²⁺, Cu²⁺)". Jurnal Kimia Sains dan Aplikasi 23, n. 3 (20 marzo 2020): 75–82. http://dx.doi.org/10.14710/jksa.23.3.75-82.

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Curcumin complex compound, MLn (L = curcumin; M = Na+, Mg2+, Cu2+) has been synthesized from the reaction between curcumin and metal precursors (NaCl, MgSO4.7H2O, CuCl2.2H2O) in ethanol under reflux conditions. Synthesis takes place through the reaction between the metal ions Na+, Mg2+, or Cu2+ as the central atom and curcumin as the ligand. Curcumin has been consumed after the reaction lasts for four hours, shown by thin-layer chromatography in which a new spot appears at higher Rf as the spot of curcumin disappears in the reaction mixture. Compared with the spectrum of curcumin, the FTIR spectra of the complexes show changes in the absorption bands and shifts of wave numbers particularly in absorption bands of phenolic –OH and C=O enol groups which strongly indicates the coordination of metal ions with the curcumin ligand which is proposed to be in β–1,3 diketone system. Also, the FTIR spectra of the reaction product showed typical absorption bands for the metal-oxygen group, M–O, at 524 cm–1, 670 cm–1 and 470 cm–1 in Na+–curcumin, Mg2+–curcumin and Cu2+–curcumin, respectively.

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4

Gasanov, H. I., A. N. Azizova, N. M. Kuliyeva e Sh G. Gasimov. "COMPLEX COMPOUNDS OF PALLADIUM (II) WITH γ – GLUTAMIC ACID AMIDE". Chemical Problems 22, n. 3 (2024): 342–49. http://dx.doi.org/10.32737/2221-8688-2024-3-342-349.

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This study examined the formation of palladium (II) complex compounds with γ-glutamic acid amide in aqueous solutions and calculated the complex stability constants, also known as formation constants. After the complexes were separated from one another, each compound's structure and characteristics were studied individually. Based on data from NMR, IR, and UV spectroscopy it was established, that two ligand molecules coordinate in a monodentate manner along the donor nitrogen atoms of the amino group and in a bidentate manner along the nitrogen atoms of the amino group and oxygen. A planar square internal coordination sphere is formed in the trans- structure, respectively, in the complexes [Pd2Namine2Cl] ([PdL2Cl2]), [Pd2Namine2Ocarb] ([Pd(НL)2]).

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5

Vasil'ev, V. P. "Thermochemistry of complex compounds". Theoretical and Experimental Chemistry 27, n. 3 (maggio 1991): 242–46. http://dx.doi.org/10.1007/bf01372486.

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6

Hausmann, David, e Claus Feldmann. "Complex Zinc Bromide Compounds". Zeitschrift für anorganische und allgemeine Chemie 638, n. 10 (agosto 2012): 1596. http://dx.doi.org/10.1002/zaac.201204059.

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7

Ranskiy, Anatoliy, e Natalia Didenko. "Direct Synthesis of Cuprum(II) Complex Compounds Based on Thioamide Ligands". Chemistry & Chemical Technology 8, n. 4 (5 dicembre 2014): 371–78. http://dx.doi.org/10.23939/chcht08.04.371.

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8

Mayer, G. V., V. Ya Artyukhov, T. N. Kopylova e I. V. Sokolova. "Photoprocesses in complex organic compounds". Russian Physics Journal 41, n. 8 (agosto 1998): 809–21. http://dx.doi.org/10.1007/bf02510645.

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9

Pechenyuk, S. I., e D. P. Domonov. "Properties of binary complex compounds". Journal of Structural Chemistry 52, n. 2 (aprile 2011): 412–27. http://dx.doi.org/10.1134/s0022476611020259.

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10

Lobzhanidze, Tea. "Synthesis, Study and Use of New Type Biologically Active Arsenic-Organic Complex Compounds". Chemistry & Chemical Technology 6, n. 4 (20 dicembre 2012): 371–76. http://dx.doi.org/10.23939/chcht06.04.371.

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11

Adekenov, Sergazy Mynzhasarovich, Gabiden Maratovich Baysarov, Anar Nikhanbaevna Zhabayeva, Lyubov' Petrovna Suntsova e Aleksandr Valer'yevich Dushkin. "COMPLEX COMPOUNDS BASED ON PINOSTROBIN OXIME". chemistry of plant raw material, n. 1 (16 marzo 2021): 219–26. http://dx.doi.org/10.14258/jcprm.2021018581.

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The article studied the structural features of solid dispersions of pinostrobin oxime with arabinogalactan, disodium salt of glycyrrhizic acid, polyvinylpyrrolidone and basic magnesium carbonate obtained by mechanochemical treatment. The obtained complexes of pinostrobin oxime with arabinogalactan, disodium salt of glycyrrhizic acid, polyvinylpyrrolidone, and basic magnesium carbonate have increased water solubility in comparison with the initial pinostrobin oxime. The thermal effects of pinostrobin oxime and its complex compounds have been studied by differential scanning calorimetry. At the same time, on the DSC-curve, the melting peak of solid dispersions of pinostrobin oxime with disodium salt of glycyrrhizated acid and pinostrobin oxime with arabinogalactan is not displayed, which is associated with the intermolecular interaction of the components of the complex, where the molecule of pinostrobin oxime forms a bond with a complexformation agent during mechanochemical treatment. The complex of pinostrobin oxime with magnesium carbonate is not formed, as evidenced by the thermal curve, where the melting of the sample begins at 182 °C, and complete destruction occurs at a temperature of 782 °C, which is similar to the melting peak of the initial pinostrobin oxime. The results of studying intermolecular bonds in complexes of pinostrobin oxime by the method of NMR-relaxation indicate that the times of spin-lattice and spin-spin relaxation are very sensitive to intermolecular interaction and to the diffusion mobility of molecules.

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12

Supattapone, Surachai, Justin Piro e Judy Rees. "Complex Polyamines: Unique Prion Disaggregating Compounds". CNS & Neurological Disorders - Drug Targets 8, n. 5 (1 novembre 2009): 323–28. http://dx.doi.org/10.2174/187152709789541952.

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13

Samson, Sten. "Fivefold Aggregates in Complex Intermetallic Compounds". Materials Science Forum 22-24 (gennaio 1987): 83–102. http://dx.doi.org/10.4028/www.scientific.net/msf.22-24.83.

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14

Wickleder, Mathias S. "Inorganic Lanthanide Compounds with Complex Anions". Chemical Reviews 102, n. 6 (giugno 2002): 2011–88. http://dx.doi.org/10.1021/cr010308o.

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15

Kobayashi, K., T. Sato, S. Kajishima, T. Kaneko, Y. Ishikawa e T. Saito. "Possible complex organic compounds on Mars". Advances in Space Research 19, n. 7 (gennaio 1997): 1067–76. http://dx.doi.org/10.1016/s0273-1177(97)00355-4.

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16

Adekenov, S. M., G. M. Baysarov, A. N. Zhabayeva, L. P. Suntsova e A. V. Dushkin. "Complex Compounds Based on Pinostrobin Oxime". Russian Journal of Bioorganic Chemistry 48, n. 7 (dicembre 2022): 1373–78. http://dx.doi.org/10.1134/s1068162022070019.

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17

Bernd, Raduchel, Schmitt-Willich Heribert, Gries Heinz, Schuhmann-Giampieri Gabriele, Vogler Hubert e Conrad Jurgen. "5399340 Use of amide complex compounds". Magnetic Resonance Imaging 13, n. 6 (gennaio 1995): XXI. http://dx.doi.org/10.1016/0730-725x(95)96695-8.

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18

Syt'ko, V. V., e K. V. Bokit'ko. "Nonradiative transitions in complex uranyl compounds". Journal of Applied Spectroscopy 63, n. 6 (novembre 1996): 833–40. http://dx.doi.org/10.1007/bf02606251.

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19

Babanly, M. B., L. F. Mashadiyeva, S. Z. Imamaliyeva, D. B. Tagiev, D. M. Babanly e Yu A. Yusibov. "THERMODYNAMIC PROPERTIES OF COMPLEX COPPER CHALCOGENIDES REVIEW". Chemical Problems 22, n. 3 (2024): 243–80. http://dx.doi.org/10.32737/2221-8688-2024-3-243-280.

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Complex copper-based chalcogenides are a significant environmental-friendly functional material that has great application potential due to their interesting thermoelectric, photoelectric, optical, and other properties, as well as their ionic conductivity. Analysis of numerous studies shows that improving the application characteristics of these compounds is associated with manipulating their structure and composition. An effective solution for optimizing such processes requires their in-depth thermodynamic analysis, which requires reliable data on the fundamental thermodynamic characteristics of the corresponding compounds. This review summarizes the results of researches, including ours works, on the thermodynamic properties of copper chalcogenides with some p1 -p 3 elements. The majority of these works were carried out using various modifications of the electromotive force (EMF) method. Planning of experiments carried out by this equilibrium method of chemical thermodynamics and processing of their data is impossible without the presence of reliable data on phase equilibria. Taking this into account, in addition to thermodynamic data, the work also presents the solid-phase equilibria diagrams for a number of systems studied by the EMF method. The analysis showed that for the Cu-Tl-X, Cu-Ge(Sn)-X (X-S, Se, Te) and Cu-As(Sb, Bi)-S(Se) ternary systems there are mutually consistent data on the phase equilibria and thermodynamic functions of the ternary compounds. For the Cu-Tl-X and Cu-Sn-Se systems, the thermodynamic functions of ternary compounds are obtained by two modifications of the EMF method by determining the partial molar functions of two different components - copper and thallium (tin). The thermodynamic properties of copper chalcogenides with gallium, indium, and silicon have not been extensively researched, and the data that is available is inconsistent.

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20

Cimpoeşu, F., Marius Andruh e E. Segal. "Thermal behaviour of complex cation-complex anion type coordination compounds". Thermochimica Acta 177 (aprile 1991): 93–100. http://dx.doi.org/10.1016/0040-6031(91)80087-y.

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21

Dragoe, N., Marius Andruh e E. Segal. "Thermal behaviour of complex cation-complex anion type coordination compounds". Thermochimica Acta 176 (marzo 1991): 241–48. http://dx.doi.org/10.1016/0040-6031(91)80279-r.

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22

Panchenko, Tetiana, Maria Evseeva e Anatoliy Ranskiy. "Copper(II) and Nickel(II) with N,N’-bis(salicylidene)thiosemicarbazide Heterometal Complex Compounds". Chemistry & Chemical Technology 8, n. 3 (1 settembre 2014): 243–48. http://dx.doi.org/10.23939/chcht08.03.243.

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23

Stoilov, Yu Yu. "Bleaching wave lasers utilizing complex organic compounds". Uspekhi Fizicheskih Nauk 154, n. 4 (1988): 661. http://dx.doi.org/10.3367/ufnr.0154.198804d.0661.

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24

Cherkasova, T. G., Ye V. Cherkasova, I. V. Isakova, A. V. Tikhomirova e A. A. Bobrovnikova. ""THERMAL ANALYSIS OF DOUBLE COMPLEX COMPOUNDS OF". Vestnik of Kuzbass State Technical University 18, n. 2 (2018): 120–26. http://dx.doi.org/10.26730/1999-4125-2018-2-120-126.

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25

Khodos, M. Y. "Thin Films of Complex Transition-Element Compounds". Materials Science Forum 62-64 (gennaio 1991): 739–40. http://dx.doi.org/10.4028/www.scientific.net/msf.62-64.739.

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26

Borisevich, N. A. "Lasing of Vapours of Complex Organic Compounds". Optica Acta: International Journal of Optics 32, n. 9-10 (settembre 1985): 1071–87. http://dx.doi.org/10.1080/713821845.

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27

Stoĭlov, Yu Yu. "Bleaching wave lasers utilizing complex organic compounds". Soviet Physics Uspekhi 31, n. 4 (30 aprile 1988): 354–63. http://dx.doi.org/10.1070/pu1988v031n04abeh005750.

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28

Györyová, K., V. Balek, B. H. Behrens, A. Matuschek e A. Kettrup. "Thermal properties of zinc butyrate complex compounds". Journal of Thermal Analysis 48, n. 6 (giugno 1997): 1263–71. http://dx.doi.org/10.1007/bf01983436.

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29

LABUDOVA, O. "Nuclease mimetic effect of copper complex compounds". Journal of Inorganic Biochemistry 61, n. 3 (febbraio 1996): 227–31. http://dx.doi.org/10.1016/0162-0134(95)00074-7.

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30

Peter, Heinrich H., e Theophile Moerker. "Process for the preparation of complex compounds". Nuclear Medicine and Biology 20, n. 2 (febbraio 1993): II. http://dx.doi.org/10.1016/0969-8051(93)90127-g.

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31

Señas, A., J. Rodrı́guez Fernández, J. C. Gómez Sal, J. Garcı́a Soldevilla e J. Rodrı́guez Carvajal. "Complex magnetic structures in TbPt1−xCux compounds". Physica B: Condensed Matter 276-278 (marzo 2000): 612–13. http://dx.doi.org/10.1016/s0921-4526(99)01718-4.

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32

Mitsudo, Take-aki, Nobuyoshi Suzuki, Teruyuki Kondo e Yoshihisa Watanabe. "Ruthenium Complex-Catalyzed Carbonylation of Allylic Compounds". Journal of Organic Chemistry 59, n. 25 (dicembre 1994): 7759–65. http://dx.doi.org/10.1021/jo00104a036.

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33

Enikeeva, Z. M., e A. G. Muftakhov. "Complex compounds based on a colchicine derivative". Chemistry of Natural Compounds 32, n. 5 (settembre 1996): 710–12. http://dx.doi.org/10.1007/bf01375120.

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34

Tsuji, Yasushi, Teruyuki Kondo e Yoshihisa Watanabe. "Platinum complex-catalyzed carbonylation of acetylenic compounds". Journal of Molecular Catalysis 40, n. 3 (giugno 1987): 295–304. http://dx.doi.org/10.1016/0304-5102(87)80094-9.

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35

Groeneveld, W. L. "Complex-chlorides I. PCl5-compounds. Preliminary communication". Recueil des Travaux Chimiques des Pays-Bas 71, n. 11 (2 settembre 2010): 1152–56. http://dx.doi.org/10.1002/recl.19520711114.

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36

Beaudot, P., M. E. De Roy e J. P. Besse. "Intercalation of Platinum Complex in LDH Compounds". Journal of Solid State Chemistry 161, n. 2 (novembre 2001): 332–40. http://dx.doi.org/10.1006/jssc.2001.9322.

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37

Malook, M. V., O. S. Matrosov e I. V. Rula. "Complex zinc (II) compounds as nitrification inhibitors". Voprosy Khimii i Khimicheskoi Tekhnologii, n. 6 (dicembre 2023): 129–39. http://dx.doi.org/10.32434/0321-4095-2023-151-6-129-139.

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This work was aimed at synthesizing a number of new complex compounds, nitrification inhibitors containing Zn2+, and determining their structure, composition and biological activity. Four substances with different ratios of ligands (4-amino-1,2,4-trazole (ATC)) and dicyandiamide (DCD)) were synthesized. Some physicochemical properties were determined, such as thermal behavior and solubility of complexes in pure KAS-28 (a saturated solution of urea and ammonium nitrate containing 28% nitrogen) and its 50 % solution. The content of Zn2+ in each substance was determined. The functional groups belonging to the ligands were established using IR spectroscopy. It was established that the attachment of ATC in solution takes place monodentately to one zinc atom through the N1 atom, and in crystals it occurs bidentately to two zinc atoms through the N1 and N2 atoms (1, 2-coordination). The attachment of DCD, most likely, proceeds through the C=NH group. The level of biological activity of complex compounds was determined by the potentiometric method. A direct measurement of the concentration of NH4+ and NO3– ions was carried out. The greatest influence on the nitrification process was found in the complex with the following probable empirical formula [Zn(ATC)2(DCD)1(H2O)1]SO4. When using it, the smallest loss of ammonium and the smallest formation of nitrates in the soil were observed. This indicates the influence on both stages of nitrification.

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38

Maksymova, І. G. "The Enzyme Membrain-Associated Complex Activity in Rat Brain under Imidazolin Containing Organic Compounds Action". Ukraïnsʹkij žurnal medicini, bìologìï ta sportu 1, n. 2 (19 maggio 2016): 135–38. http://dx.doi.org/10.26693/jmbs01.02.135.

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39

Zeynalov, S. B., S. K. Sharifova, E. R. Huseynov, F. A. Abdullayeva, M. G. Abbasov e A. K. Sharifova. "SYNTHESIS AND STUDY OF COMPLEX COMPOUNDS BASED ON FERRİC CHLORİDE (FeCI3) REACTIONS WITH AMINO ACIDS". Chemical Problems 18, n. 2 (2020): 229–36. http://dx.doi.org/10.32737/2221-8688-2020-2-229-236.

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40

Andruh, Marius, Maria Brezeanu, Ileana Parashchivoiu e E. Segal. "Thermal behaviour of complex cation-complex anion-type coordination compounds. part I". Thermochimica Acta 161, n. 2 (maggio 1990): 247–57. http://dx.doi.org/10.1016/0040-6031(90)80306-j.

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41

Dragoe, N., Marius Andruh, Aura Meghea e E. Segal. "Thermal behaviour of complex cation-complex anion-type coordination compounds. part II". Thermochimica Acta 161, n. 2 (maggio 1990): 259–66. http://dx.doi.org/10.1016/0040-6031(90)80307-k.

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42

Dragoe, N. D., E. Segal e Marius Andruh. "Thermal behaviour of complex cation-complex anion type coordination compounds. Part 7". Thermochimica Acta 220 (giugno 1993): 185–90. http://dx.doi.org/10.1016/0040-6031(93)80463-k.

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43

Mamedova, Shafa Agаеvna. "METAL COMPLEX CATALYSIS". Globus 7, n. 5(62) (4 agosto 2021): 31–33. http://dx.doi.org/10.52013/2658-5197-62-5-7.

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Abstract (sommario):

Complexes of transition metals with chiral ligands are considered as catalysts. Among metal-containing organic complexes with semiconducting properties, compounds of the porphin series occupy a special place in electrocatalytic studies. The properties of the porphyrin macrocycle, their role in catalysis, and the influence of the nature of the metal on the catalytic properties of the complex are considered.

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44

Feng, Xiangqing, e Haifeng Du. "Shi Epoxidation: A Great Shortcut to Complex Compounds". Chinese Journal of Chemistry 39, n. 7 (18 giugno 2021): 2016–26. http://dx.doi.org/10.1002/cjoc.202000744.

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45

JITARU, IOANA, MARIANA BICHER, OANA JINGA e DAN JINGA. "COMPLEX COMPOUNDS WITH PHOSPHORUS AND NITROGEN CONTAINING LIGANDS". Phosphorus Research Bulletin 10 (1999): 708–13. http://dx.doi.org/10.3363/prb1992.10.0_708.

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46

Liu, Shu Hong, Xi Jie Lan e Hong Gao. "Complex Activation of Coal Gangue to Al Compounds". Advanced Materials Research 402 (novembre 2011): 734–37. http://dx.doi.org/10.4028/www.scientific.net/amr.402.734.

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The coal gangue was activated by calcine activation, calcine activation + mechanical activation (MA) complex activation. From the results of O2-TPO-MS and Ar-TPR-MS, we can speculate the reactions occurred during the coal gangue calcine activation processing. Effects of calcine temperature, calcine activation + MA complex activation, kinds of acid on the extraction percent of Al were investigated. The results of the extraction percent of Al and particle size analysis show that calcine (400~600 oC) activation and calcine (400~600 oC) + MA complex activation can enhance the extraction percent of Al and decrease the particle size. Much higher extraction percent of Al can be obtained with H2SO4 as acid medium than with HCl as acid medium for the coal gangue activated with the same condition.

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47

Ion, Emilia, Mirela Calinescu, Ana Emandi, Victoria Badea e Dumitru Negoiu. "Copper(II) Complex Compounds with Mixed Hydrazone Ligands". Revista de Chimie 59, n. 1 (9 febbraio 2008): 12–16. http://dx.doi.org/10.37358/rc.08.1.1697.

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Abstract (sommario):

Three Cu(II) complex compounds with mixed hydrazone ligands have been prepared and characterized in view of their potential biological activity. The complex compounds have the formulas: [Cu(HLa)(Lc)Br], [CuLaLc] and [CuLbLc] . Na, where HLa = 4-dimethylamino benzaldehyde-2-benzothiazolyl hydrazone, H2Lb = 2-hydroxybenzaldehyde-2-benzothiazolyl hydrazone and HLc = 2-hydroxy-1-naphthyliden-N,N-dimethyl hydrazone. The complexes have been characterized by elemental and thermogravimetrical analysis, infrared, electronic and EPR spectra. EPR spectral studies of the complexes gave axial symmetry, with the ground state. The bonding parameters calculated from the electronic and EPR spectra indicate strong in-plane p-bonding for all the complexes. Investigations on antibacterial and antifungal activities show that the complexes are more active than the free ligands against various Gram positive, Gram negative bacteria and fungi.

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48

Potapov, I. V., e A. S. Sukhikh. "The redox properties of fluoroquinolone-Сu2+ complex compounds". Fundamental and Clinical Medicine 1, n. 1 (2016): 39–45. http://dx.doi.org/10.23946/2500-0764-2016-1-1-39-45.

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49

O'Sullivan, Dermot. "Computer program eases task of naming complex compounds". Chemical & Engineering News 68, n. 33 (13 agosto 1990): 31–32. http://dx.doi.org/10.1145/127278.127280.

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50

Kovaleva, Elena V., e Lyudmila A. Zemnukhova. "Ecotoxicological properties of antimony (III) complex fluoride compounds". Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya, n. 13 (1 giugno 2019): 28–41. http://dx.doi.org/10.17223/24135542/13/4.

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