The interaction of 1,1,3,3-tetrakis(trifluoromethyl)allene with sodium derivatives of iron and rhenium carbonyl compounds. Synthesis and structure of the σ- and π-complexes

Abstract

1,1,3,3-Tetrakis(trifluoromethyl)allene reacts with π-C 5H 5Fe(CO) 2- and Re(CO) 5- to give σ-complexes. The iron σ-complex, when refluxed in decalin or exposed to UV radiation, is transformed to the π-allylidene analogue. Structures of the σ-complexes are determined from IR, Raman, 19F NMR and X-ray spectral data.