Phosphole [2+ 2] and [4+ 2] dimerizations around metal carbonyl moieties. Structure and chemistry of a new type of exo [4+ 2] dimers

CC Santini, J Fischer, F Mathey…

Index: Santini,C.C.; Fischer,J.; Mathey,F. Journal of the American Chemical Society, 1980 , vol. 102, p. 5809

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Citation Number: 63

Abstract

Abstract: W irradiation of mixtures of 3, 4-dimethylphospholes (L) with M (C0) 6 (M= Cr, Mo, W) leads mainly to (LL) M (CO), complexes derived from Diels-Alder [4+ 21 phosphole dimers acting as chelating ligands. An X-ray structural study of one of these complexes shows that, contrary to normal endo phosphole dimers, these compounds have the exo configuration and that the phosphorus bridge is very strained: LCPC= 79.4'. With 1- ...