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ESR studies of Ziegler type catalytic systems in the presence of CO

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Abstract

ESR studies of the interaction between Co(C5H7O2)2 and Al(C2H5)3 in presence of CO reveal the formation of paramagnetic tri- and tetra-nuclear carbonyl compounds and the consecutive formation of complexes including one, two and three cobalt atoms. Al(C2H5)3 decomposition is suggested to take place on the reduced transition metal to form Co−Al clusters. Structures for the paramagnetic heteronuclear clusters is proposed.

Abstract

Изучено взаимодействие бис-ацетилацетоната кобальта с триэтилалюминием в присутствии монооксида углерода. Обнаружены парамагнитные трех- и четырехядерные карвонильные соединения. Установлено последовательное образование комплексов, в состав которых входят один, два и три атома кобальта. Предполагается, что разложение алюминий-органических соединений происходит на восстановленном пе⌕еходном металле с образованием кластеров со связьо кобальт-алюминий. Предложено строение парамагнитных гетероядерных кластеров.

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Gruznykh, V.A., Shmidt, F.K., Saraev, V.V. et al. ESR studies of Ziegler type catalytic systems in the presence of CO. React Kinet Catal Lett 33, 17–21 (1987). https://doi.org/10.1007/BF02066693

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  • DOI: https://doi.org/10.1007/BF02066693

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