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A. M. Sheloumov F. M. Dolgushin M. V. Kondrashov P. V. Petrovskii Kh. A. Barbakadze O. I. Lekashvili A. A. Koridze 《Russian Chemical Bulletin》2007,56(9):1757-1764
First ruthenium complexes with a ferrocene-based pincer ligand were synthesized. The cyclometallation of 1,3-bis[(di-tert-butylphosphino)methyl]ferrocene with RuCl2(DMSO)4 in 2-methoxyethanol afforded the RuCl(CO)[{2,5-(But
2PCH2)2C5H2}Fe(C5H5)](RuCl(CO)
) complex (5). Complex 5 reversibly binds CO to form the RuCl(CO)2
complex (6). The analogous reaction in the presence of NaBAr′4 (Ar′ = 3,5-(CF3)2C6H3) produced the cationic complex {Ru(CO)2
}BAr′4 (7). The structures of complexes 5 and 7 were established by single-crystal X-ray diffraction. The X-ray diffraction study revealed an agostic interaction between
one of the C-H bonds of the axial (exo-oriented with respect to the ferrocene iron atom) tert-butyl group and the Ru atom in complexes 5 and 7.
Dedicated to Academician G. A. Abakumov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1695–1701, September, 2007. 相似文献
24.
É. I. Fedin P. V. Petrovskii L. A. Fedorov Yu. V. Makarov N. E. Kolobova K. N. Anisimov 《Russian Chemical Bulletin》1973,22(9):2093-2095
Conclusions The electron density on the-cyclopentadienyl ligand in cyclopentadienylmanganese tricarbonyl derivatives is higher than in the corresponding cyclopentadienylrhenium tricarbonyl derivatives.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2142–2143, September, 1973. 相似文献
25.
O. V. Bykhovskaya I. M. Aladzheva I. V. Leontieva P. V. Petrovskii T. A. Mastryukova M. I. Kabachnii 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-4)
Abstract Direction of alkylation of phosphoranes (I) depends on the nature of the substituent Y and the alkylating agent. Unsubstituted phosphorane reacts with CH3J yielding only the product of C-methylation (II), whereas the reaction with Me2SO4 proceeds at both ends of the OPC-triad, preferably yielding the O-alkylation product (IIIa, 80%). 相似文献
26.
I. A. Lobanova M. Ya. Berzina I. B. Sivaev P. V. Petrovskii V. I. Bregadze 《Russian Chemical Bulletin》2010,59(12):2302-2308
A novel approach to the synthesis of boron-containing amino acids based on ring opening of cyclic oxonium derivatives of polyhedral boron hydrides under the action of the terminal functional groups of natural amino acids was proposed. This approach was successfully implemented for the synthesis of cobalt bis(dicarbollide) — tyrosine conjugate. 相似文献
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29.
Reinvestigation of the acid-catalyzed cyclization of 1-(3-hydroxypropynyl)cyclododecan-1-ol under the conditions of the Nazarov
reaction demonstrated that this conversion yields two isomeric bicyclic ketones, namely, bicyclo[10.3.0]pentadec-1(12)-en-13-one
and bicyclo[10.3.0]pentadec-1-en-3-one. The latter compound is thermodynamically less stable.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1325–1327, July, 1997. 相似文献
30.
Gololobov Yu. G. Galkin V. I. Petrovskii P. V. Linchenko O. A. Zueva E. M. Mubarakova L. G. Cherkasov R. A. Schmutzler R. Ernst L. Jones P. G. Freytag M. 《Russian Chemical Bulletin》2003,52(9):1920-1927
Studies by 1H NMR spectroscopy and X-ray diffraction analysis revealed hindered rotation of the aromatic substituent about the CAr—N bond in ortho-substituted (except for o-fluorine-substituted) phosphorus-containing carbamates. The energy barriers to rotation (G
c
) and coalescence temperatures (T
c) determined by the coalescence method increase with increasing volume of the ortho substituent. Conformations resulting from rotation of the ortho-substituted aryl group about the CAr—N bond were analyzed by quantum-chemical methods, potential curves were constructed, and differences between the conformational energies and the heights of rotation barriers were estimated. The theoretical rotation barriers change in parallel with the experimental values of G
c
; however, the theoretical values are much smaller in magnitude. 相似文献