The reactivity of some Ni(II)-tertiary phosphine complexes, NiX2L2 (X=Cl, Br, I; L=tertiary alkylphosphine), towards the RONa (R=Me, Et, Ph, PhCH2) alkoxides under carbon monoxide, has been studied. Whereas their reactions with methoxide yield trans-NiXL2COOCH3 methoxo-carbonyl complexes, those with the other alkoxides lead to the formation of organic and inorganic products such as aldehydes, hydrocarbons, CO2 or derivatives, Ni(II) and Ni(0) compounds. This behaviour could be explained by assuming that the reactions lead to the formation of unstable NiXL2(OR) alkoxo complexes, which can either react with CO to yield the alkoxo-carbonyls NiXL2COOR, or else decompose to Ni compounds and organic products. The alkoxo complexes have not been isolated but in some cases spectroscopic evidence of their formation has been obtained. Furthermore, we have studied the reactivity of methoxo-carbonyl complexes towards amines and alkoxides: under CO they are not very reactive either in mild or in drastic conditions, and above all yield compounds which derive from decarbonylative and decarboxylative decomposition.

The reactivity of Ni(II)-tertiary phosphine complexes towards alkoxides under carbon monoxide: methoxo-carbonyl complexes, synthesis and reactivity / Giannoccaro, Potenzo; Nobile, Cosimo Francesco; Latronico, Mario. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - STAMPA. - 175:1(1990), pp. 133-139. [10.1016/S0020-1693(00)83208-9]

The reactivity of Ni(II)-tertiary phosphine complexes towards alkoxides under carbon monoxide: methoxo-carbonyl complexes, synthesis and reactivity

Cosimo Francesco Nobile;Mario Latronico
1990-01-01

Abstract

The reactivity of some Ni(II)-tertiary phosphine complexes, NiX2L2 (X=Cl, Br, I; L=tertiary alkylphosphine), towards the RONa (R=Me, Et, Ph, PhCH2) alkoxides under carbon monoxide, has been studied. Whereas their reactions with methoxide yield trans-NiXL2COOCH3 methoxo-carbonyl complexes, those with the other alkoxides lead to the formation of organic and inorganic products such as aldehydes, hydrocarbons, CO2 or derivatives, Ni(II) and Ni(0) compounds. This behaviour could be explained by assuming that the reactions lead to the formation of unstable NiXL2(OR) alkoxo complexes, which can either react with CO to yield the alkoxo-carbonyls NiXL2COOR, or else decompose to Ni compounds and organic products. The alkoxo complexes have not been isolated but in some cases spectroscopic evidence of their formation has been obtained. Furthermore, we have studied the reactivity of methoxo-carbonyl complexes towards amines and alkoxides: under CO they are not very reactive either in mild or in drastic conditions, and above all yield compounds which derive from decarbonylative and decarboxylative decomposition.
1990
The reactivity of Ni(II)-tertiary phosphine complexes towards alkoxides under carbon monoxide: methoxo-carbonyl complexes, synthesis and reactivity / Giannoccaro, Potenzo; Nobile, Cosimo Francesco; Latronico, Mario. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - STAMPA. - 175:1(1990), pp. 133-139. [10.1016/S0020-1693(00)83208-9]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/3840
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