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The binary complex salt [Co(N2C2H8)3][AuCl4]2Cl has been synthesized. Its crystal structure has been determined. Crystal data for C6H24N6Cl9AuCo: a = 20.8976(14) Å, b = 14.4773(9) Å, c = 7.9944(5) Å; β = 110.809(2)°; V = 2260.9(3) Å3, space group C2/c, Z = 4, d calc = 2.798 g/cm3. The plane square environment of the gold atom of the complex anion is completed to a tetragonal pyramid by the chlorine atom of the neighboring complex anion (Au…Cl 3.538 Å). The structure is layered. Layers of complex cations and complex anions alternate along the X axis. 相似文献
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Lumduan Mangsup Sutatip Siripaisarnpipat Narongsuk Chaichit 《Analytical sciences》2003,19(9):1345-1346
The reaction between CoCl2 x 6H2O and 2-1-(2-thiazolylazo)-p-cresol (TAC) in acetone resulted in six coordinated cobalt(III) complex, [Co(TAC)2]Cl3. Two TAC ligands coordinate with cobalt ion forming four five membered chelate rings. The cobalt ion is octahedrally coordinated by a phenolic oxygen, azo nitrogen and nitrogen in thiazole rings. Three chloride ions are disordered. 相似文献
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Summary The reaction of dichlorotetrakis(pyridine)cobalt(III) chloride. [CoCl2(Py)4]Cl, with alkyl- or arylamines in EtOH or i-PrOH yielded [CoCl2(Py)2] in all cases. This reduction of CoIII to CoII takes place only in the presence of the amines. [CoCl2(Py)2] in EtOH is oxidized by Cl2 gas and in the presence of pyridine gives [CoCl2(Py)4] +, while in pyridine alone [CoCl2(Py)4] is formed. 相似文献
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B. Seshagiri Rao Rabindranath Nanda Kumuda Kanta Tripathy 《Transition Metal Chemistry》1981,6(2):97-100
Summary The kinetics of acid hydrolysis ofcis-[CoCl(btzH)(en)2]2+ andcis-[CoCl(btzMe)(en)2]2+ complexes (where btzH = benzotriazole, btzMe =N-methylbenzotriazole and en = ethylenediamine) have been investigated in HClO4 at ionic strength 1 = 0.25 mol dm–3 in the 30–40° range. In the 1.0 x 10–1 to 1.0 X 10–3 mol dm–3 acid strength range, the rate of aquation of the [CoCl(btzH)(en)2]2+ cation follows the relationship:-d ln[complex]/dt = k1 + k2KNH[H+]–1, where k1 and k2 are aquation rate constants of the acid independent and acid dependent steps respectively, and KNH is the acid dissociation constant of the coordinated benzotriazole.cis-[CoCl(btzMe)-(en)2]2+ undergoes acid independent hydrolysis presumably due to the absence of a labile N-H proton. The base hydrolysis could be followed for thecis-[CoCl(btzMe)(en)2]2+ complex only by measuring hydrolysis rates at 0°. 相似文献
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Summary A hydroxocobalt(III) complex (1a), has been obtained by reaction of bis(dehydroacetato)ethylenediimine (H2dhaen) with cobalt(II) hydroxide or acetate in the presence of air. Addition of a second complexing agent leads to the formation of a series of mixed-ligand complexes (2)-(26) having either the trans- or cis- configuration. In the cis- complexes, the quadridentate ligand dhaen adopts a nonplanar conformation. Configurations are distinguishable from characteristic differences in the electronic and n.m.r. spectra. 相似文献
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The halogenation of (C2B9H11)2Co?Cs+ by elemental halogens in alcohol and γ-radiation-induced halogenation by CHBr3, CH 相似文献
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The first O-bonded sulfenate species [Co(en)2(py-SO-O)]2+ has been synthesized by isomerization of its S-bonded linkage isomer, [Co(en)2(pyridine-2-sulfenate-S]2+. The sulfenate ion in both forms is stabilized by coordination to the electropositive cobalt(III) ion. The driving force for the formation of the O-bonded sulfenate linkage isomer comes from the four to five membered ring expansion which accompanies the rearrangement. Crystal structures of the green O-sulfenate confirm the formulation and reveal varying amounts of a cocrystallized O-bonded sulfinate diastereomer. The cations have essentially identical structures except for the extra oxygen in the O-sulfinate. Differences in packing of cations and perchlorates give rise to two different structural types for the salts, corresponding to sulfenate-rich and sulfinate-rich phases. 相似文献
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D. A. Rudakov V. L. Shirokii V. A. Knizhnikov A. V. Bazhanov E. I. Vecher N. A. Maier V. I. Potkin A. N. Ryabtsev P. V. Petrovskii I. B. Sivaev V. I. Bregadze I. L. Eremenko 《Russian Chemical Bulletin》2004,53(11):2554-2557
A convenient electrochemical method for the synthesis of 8,8-dihalogen derivatives of bis(1,2-dicarbollyl)cobalt(III) anion [8,8X2-3,3-Co(1,2-C2B9H10)]– (X = Cl, Br, I) was developed. The method includes the electrolysis of a solution of alkaline metal halide and tetramethylammonium salt of bis(1,2-dicarbollyl)cobalt(III) in methanol at 50 °C in a one-compartment electrochemical cell with a nickel cathode and platinum anode.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2448–2451, November, 2004. 相似文献