Phosphi–nomethanide complexes/metalla–phospha heterocycles

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An overview of recent results in the field of heterocycles with incorporated phosphinomethanide moieties is provided in this article. Monophosphinomethanides and Diphosphinomethani-des interact with main group, transition or lanthanoide metal centers to give complexeswith chelating ligands of the type, M(CP) and M(PCP)M. Insertion of sulfuror selenium into the metal-phosphorus bond is feasible, leading to novel heterocycles. Likewise, insertion of CO into the metal-carbon bond may be achieved, and again, after rearrangement, novel type heterocycles can be obtained. The interaction of at least two phosphinomethanide ligands at a metal center may promote oxidative coupling (C-C, P-C, or P-P), methyl transfer, and various kinds of metalation reactions at a C-H functionality. The products again represent novel classes of metalla-phospha heterocycles. The reaction course and thus the type of heterocycles obtained may be tuned by the substitution pattern of the phosphino-methanides and by the choice of the coordination center. Coupling of two M(PCP)M fragments may lead to heterocycles of the type c-M4P(PCP)2.

Original languageEnglish
Pages (from-to)77-84
Number of pages8
JournalPhosphorus, Sulfur and Silicon and the Related Elements
Issue number1-4
StatePublished - 1 Jan 1992


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