Chemistry of the metal carbonyls. Part XXXV. Bis(dicarbonyl-π-cyclopentadienyliron)bis(iodo)germane and related compounds

Abstract

Reaction between dicarbonyl-π-cyclopentadienyliron and germanium(II) iodide affords I₂Ge[Fe(CO)₂(π-C₅H₅)]₂, which can also be made by treating germanium(IV) iodide with π-C₅H₅Fe(CO)₂Na. The di-iodo complex reacts with methyl-lithium and with sodium borohydride to give the compounds X₂Ge[Fe(CO)₂(π-C₅H₅)]₂(X = Me and H, respectively). The dichloro-derivative Cl₂Ge[Fe(CO)₂(π-C₅H₅)]₂ has also been prepared, along with two analogous tin compounds. The infrared spectra of the complexes in the carbonyl region have been studied, and the number and relative intensities of the carbonyl stretching modes have been used to deduce probable structures.