Phosphaferrocenes transition metal complexes

Hg NMR, 4 Phlorins, 855 Phosphabenzene transition metal complexes, 1041 Phosphacymantrenes transition metal complexes, 1043 Phosphaferrocenes transition metal complexes, 1043 Phosphates dialkyldithio metal complexes, 643 diaryldithio metal complexes, 643 trialkyldithio metal complexes, 642 trialkylthio... 

A theoretical study of the Diels-Alder reactions between 1,3-butadiene and, respectively, cyclopentadiene and 2H-phosphole, has revealed a remarkable similarity between the two reactions. Further studies of photocycloaddition reactions of phosphole moieties have also been reported. Transition metal complexes of phospholide anions continue to attract attention, and in particular the chemistry of phosphaferrocene systems remains a major interest . The past year has also seen significant activity in the chemistry of di- and tri-phospholes, related polyphospholide anions, and also heterodiphosphole systems. Routes have been developed to the diphosphonio-l,2-diphospholes 356,... 

An interesting new development in aromatic phosphole chemistry has been the preparation and subsequent study of the electrophilic substitution reactions of transition-metal complexes of phospholyl anions, e.g. the phosphaferrocenes (165), which are obtained by the reaction of the appropriate P-phenylphosphole with transition-metal cyclopentadienyls or carbonyls, - and which undergo acetylation at... 

A rich and diverse chemistry has developed based on the phosphorus ring system complexed to transition metals analogous to the metallocenes. Phospholes and phosphametallocenes have recently been reviewed by Mathey et al The phosphacymantrenes and phosphaferrocenes will be used here as representative examples (equation 76). UV photoelectron spectroscopy has shown that the HOMO is not localized on phosphorus, but is mainly on the ring carbons the lone pair orbital is only the fourth highest occupied orbital. The LUMO is mainly localized on phosphorus in phos-phacymantrene, whereas in cymantrene it is on the manganese. 

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