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M. S. Nikol'skii 《Differential Equations》2003,39(11):1603-1608
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S. P. Tunik S. I. Pomogailo G. I. Dzhardimalieva A. D. Pomogailo I. I. Chuev S. M. Aldoshin A. B. Nikol'skii 《Russian Chemical Bulletin》1993,42(5):937-942
Mono- and disubstituted cluster metal-containing monomers were obtained under mild conditions on interaction of Rh6(CO)16 with 4-vinylpyridine (4-ViPy) in the presence of N-trimethylaminoxide. These products were characterized by IR and1H NMR spectroscopy and by elemental and X-ray analyses. Rh6(CO)15(4-ViPy) was found to be an octahedral cluster with eleven terminal and four 3-bridging carbonyl ligands. 4-ViPy is linked with the Rh(3) atom through the N atom and occupies the coordination site of the twelfth CO terminal ligand. The mean value of the Rh-Rh bond length is 2.762 Å. The unsaturated ligand has little or no effect on the geometry of the starting cluster and its double bond retains the ability to undergo addition reactions.For part 28, seeRuss. Chem. Bull., 1993, 453.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 975–979, May, 1993. 相似文献
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Conclusions Three methods were developed for the synthesis of cyclopropyl organyl sulfides, which are based on the reaction of cyclopropyl halides with either thiols or alkali metal thiolates in a superbasic medium, the reaction of cyclopropyllithium with diorganyl disulfides, and the reaction of cyclopropyl alkyl sulfides with lithium in liquid ammonia and subsequent reaction with organic bromo derivatives. In contrast, the cleavage of cyclopropyl aryl sulfides leads to the formation of lithium arylthiolates.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 1664–1667, July, 1983. 相似文献
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Sizova O. V. Sizov V. V. Ershov A. Yu. Nikol'skii A. B. Baranovskii V. I. Shashko A. D. 《Russian Journal of General Chemistry》2001,71(7):995-1000
The results of ab initio quantum-chemical calculations of isolated ruthenium(II) complexes cis- [Ru(bpy)2(bipy)(X)]44q (bpy is 2,2'-bipyridyl, bipy is 4,4'-bipyridyl; X = NH3, Cl-, Br-, CN-, NO-
2, ONO-, MeCN, and NO+) are presented. Analysis of the charge distributions and the orbital structures of the complex ions points to absence of strong -acceptor bonds Ru-bpy, Ru-bipy, and Ru-X (X = NO+), to delocalization of -electron density under the action of strong donors X, to localized nature of lowest unoccupied molecular orbitals, and to special position of the nitrosyl complexes in this series. 相似文献
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Knyazeva N. E. Nikol'skii V. M. Gorelov I. P. 《Russian Journal of Coordination Chemistry》2002,28(2):127-131
Complexation in the Fe2+–Fe3+–N-(carboxymethyl)aspartic acid (H3L) system in aqueous solutions was studied by pH- and redox-potentiometric titration at 25°C and at an ionic strength of 0.1 (KCl). Depending on the H3L concentration and pH, neutral, protonated, and hydroxo complexes of iron(III) can be formed in the solutions. The stability constants for all the detected complexes were calculated, and the distribution plots for the fractions of complexes vs. the solution pH were constructed. 相似文献
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