The bimetallic cyclosiloxanolate cluster complexes Na[(PhSiO2)6Cu4Ni2(μ 6-Cl)(PhSiO2)6] (1) and Na [(PhSiO2)6Cu3Ni3(μ 6-Cl)(PhSiO2)6] (2) were prepared by Na+ and Ni2+ ion exchange from in situ generated Na2{[(PhSiO2)6]2Na 4Ni4(OH)2}. Complexes 1 and 2 were characterized by analytical, spectroscopic and electrochemical methods as well as complex 2 by single-crystal X-ray diffraction. The X-ray structure shows a sandwich-type array comprising two superimposed cyclosiloxanolate rings and an M6Cl unit in between. For the first time the regioselectivity of the metal ion exchange could be deduced from the X-ray structural parameters.

Bimetallic cyclooligosiloxanolate complexes of copper and nickel / C. Zucchi, M. Mattioli, A. Cornia, A. Fabretti, G. Gavioli, M. Pizzotti, R. Ugo, Y. Pozdniakova, O. Shchegolikhina, A. Zhdanov, G. Palyi. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 280:1-2(1998), pp. 282-287.

Bimetallic cyclooligosiloxanolate complexes of copper and nickel

M. Pizzotti;R. Ugo;
1998

Abstract

The bimetallic cyclosiloxanolate cluster complexes Na[(PhSiO2)6Cu4Ni2(μ 6-Cl)(PhSiO2)6] (1) and Na [(PhSiO2)6Cu3Ni3(μ 6-Cl)(PhSiO2)6] (2) were prepared by Na+ and Ni2+ ion exchange from in situ generated Na2{[(PhSiO2)6]2Na 4Ni4(OH)2}. Complexes 1 and 2 were characterized by analytical, spectroscopic and electrochemical methods as well as complex 2 by single-crystal X-ray diffraction. The X-ray structure shows a sandwich-type array comprising two superimposed cyclosiloxanolate rings and an M6Cl unit in between. For the first time the regioselectivity of the metal ion exchange could be deduced from the X-ray structural parameters.
Settore CHIM/03 - Chimica Generale e Inorganica
INORGANICA CHIMICA ACTA
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/193704
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