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L. N. Dianova T. G. Koksharova N. V. Volkova 《Chemistry of Heterocyclic Compounds》1992,28(3):321-323
Nucleophilic substitution of 5-methylthio- and 5-cyanomethylthio-7-amino-s-triazolo[1,5-c]pyrimidines has been carried out using sodium hydroxide, ammonia, hydrazine hydrate, and four amines. The cyanomethyl group is particularly reactive under these conditions and 5-cyanomethylthiotriazolopyrimidine can be used to functionalize this heterocycle.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 382–385, March, 1992. 相似文献
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A. L. Lapidus S. D. Pirozhkov A. R. Tumanova T. G. Koksharova N. V. Volkova V. A. Bakulev V. S. Mokrushin 《Russian Chemical Bulletin》1992,41(1):178-180
A new method has been developed for the synthesis of the ethyl ester of the mononitrile of malonic acid by the carbonylation of benzenesulfonyloxyacetonitrile in absolute ethanol in the presence of cobalt carbonyl. The yield of the desired product was 30% with 60–90% conversion of the starting compound. The effects of temperature, pressure, and reaction time were studied.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. S. M. Kirov Urals Polytechnical Institute, Ekaterinburg. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 215–216, January, 1992. 相似文献
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T. V. Koksharova 《Russian Journal of General Chemistry》2004,74(10):1524-1528
Reactions of cobalt(III), nickel(II), and copper(II) glycinates and glycylglycinates with thiosemicarbazide were studied. The reaction products were characterized by chemical and X-ray diffraction analyses, IR spectroscopy, diffuse reflection spectroscopy, and thermogravimetry.Translated from Zhurnal Obshchei Khimii, Vol. 74, No. 10, 2004, pp. 1644–1648.Original Russian Text Copyright © 2004 by Koksharova.This revised version was published online in April 2005 with a corrected cover date. 相似文献
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A. S. Antsyshkina G. G. Sadikov T. V. Koksharova I. S. Gritsenko V. S. Sergienko 《Russian Journal of Inorganic Chemistry》2006,51(10):1571-1576
A copper(II) valerate complex with nicotinamide (L) [CuL2(C4H9COO)2] (I) has been synthesized and studied by IR spectroscopy and thermogravimetry. The crystal structure has been determined. The crystals of 1 are monoclinic, a = 11.297(1) Å, b = 6.666(1) Å, c = 16.873(2) Å, b = 108.50(1)°, V = 1204.9(3) Å3, Z = 2, space group P21/c. The structural units of the crystal of I are centrosymmetric tetragonal bipyramidal (4+2) complex molecules. The equatorial positions of the bipyramid are occupied by trans-arranged pairs of O (Cu-O, 1.973 Å) and N (Cu-N, 2.006 Å) atoms, and the axial positions are occupied by the second O atoms of the valerate anions located at longer distances (Cu-O, 2.506 Å). The supramolecular associates formed in the crystal are layers of hydrogen-bonded complexes. The disordered hydrocarbon “tails” of the valerate groups point toward the interlayer space. 相似文献
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T. V. Koksharova I. S. Gritsenko I. V. Stoyanova 《Russian Journal of General Chemistry》2006,76(6):862-870
Complexes of Co(II), Ni(II), and Cu(II) valerates and benzoates with semicarbazide were prepared. The compounds were characterized by chemical analysis, X-ray phase analysis, IR spectroscopy, diffuse reflection spectroscopy, and thermal gravimetric analysis. 相似文献
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T. V. Koksharova 《Russian Journal of Coordination Chemistry》2002,28(7):505-509
Acidic urates [Mn(HL)2] · H2O, [FeOH(HL)2]2 · 4H2O, [Co(HL)2(H2O)2] · 2H2O, and [Ni(HL)2(H2O)2] · 2H2O (H2L is uric acid) were synthesized and their structures and physicochemical properties were studied using IR spectroscopy, diffuse reflection spectroscopy, DTA, and magnetochemistry methods. The metals were shown to coordinate the urate anion through oxygen and nitrogen atoms. The [FeOH(HL)2]2 · 4H2O complex has a dimeric structure. 相似文献
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Complexes of cobalt(II), nickel(II), copper(II), and zinc phthalates with semicarbazide were synthesized. The obtained compounds were characterized by the methods of chemical analysis, IR spectroscopy, diffusion reflection spectroscopy, and thermogravimetry. 相似文献
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T. V. Koksharova S. V. Kurando I. V. Stoyanova 《Russian Journal of General Chemistry》2012,82(9):1481-1484
Complexes of copper(II), nickel(II), cobalt(III), zinc(II), and iron(III) salicylates with thiosemicarbazide were synthesized. The resulting compounds were characterized by the elemental analysis data, infrared spectroscopy, diffuse reflectance spectroscopy, and thermogravimetry. 相似文献
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New [ML(H2O)2] complexes (M = Co2+, Ni2+, or Cu2+; H2L = diphenylthiocarbazide) were synthesized and studied using IR and diffuse reflection electronic spectroscopy, magnetic chemistry, conductometry, and DTA. The metals were shown to coordinate L2–through nitrogen and sulfur atoms. The complex [CuL(H2O)2] is a dimer. 相似文献