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Your search keyword '"Shestakova, A. K."' showing total 8 results
Start Over Author "Shestakova, A. K." Journal journal of organometallic chemistry
8 results on '"Shestakova, A. K."'

2. Stoichiometric and catalytic activation of sp2 C−H bonds: molecular structure of Os3(μ-H)(μ3-nBuOC=CHPEt2)(CO)9 and catalytic properties of this and related Os and Ru clusters

Author

Voskoboynikov, Alexander Z., primary, Osina, Marina A., additional, Shestakova, Alla K., additional, Kazankova, Marina A., additional, Trostyanskaya, Inna G., additional, Beletskaya, Irina P., additional, Dolgushin, Fedor M., additional, Yanovsky, Alexander I., additional, and Struchkov, Yuri T., additional

Published
1997
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5. Stoichiometric and catalytic activation of sp2C−H bonds: molecular structure of Os3(μ-H)(μ3-nBuOC=CHPEt2)(CO)9and catalytic properties of this and related Os and Ru clusters

Author

Voskoboynikov, Alexander Z., Osina, Marina A., Shestakova, Alla K., Kazankova, Marina A., Trostyanskaya, Inna G., Beletskaya, Irina P., Dolgushin, Fedor M., Yanovsky, Alexander I., and Struchkov, Yuri T.

Abstract

The thermal reaction of nBuOCH=CHPEt2with Os3(CO)12gives a new osmium triangular cluster, Os3(μ-H)(μ3-nBuOC=CHPEt2)(CO)9(1), which was isolated in 62% yield. The structure of 1 has been determined by X-ray diffraction (P1¯, a= 12.914(3), b= 13.984(4), c= 16.375(4) Å, α= 66.83(2), β= 77.82(2), γ = 77.97(2)°, Z= 4, dcalc= 2.552 g/cm3, R= 0.0399 for 6636 reflections). The μ3-nBuOC=CHPEt2in 1acts as a five-electron donor. It forms a σ-bond with one Os atom and coordinates the second and the third Os atoms of the cluster by its olefinic bond and the phosphorus atom, respectively. Both complex 1and Os3(μ-H)(μ-CH=CHR)(CO)10(R=nC6H13, Ph) catalyze the silylation of terminal olefins with Et3SiH to yield the corresponding trans-triethylvinylsilanes and alkanes in moderate yield even at ambient temperature. The proposed mechanism of olefin silylation catalyzed by triangular metal clusters involves the olefin C−H bond activation on the triangular cluster core and formation of an intermediate which has a structure similar to that of cluster 1.

Published
1997
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