Novel η 2-ring edge coordination in the triphosphaferrocene complex [Fe(η 5-C 5H 5)(η 5-P 3C 2tBu 2)Rh(η 5-C 5Me 5)CO

Abstract

Single-crystal X-ray diffraction studies on the triphosphaferrocene [Fe(η 5-C 5H 5)(η 5P 3C 2 t Bu 2)] and its [Rh(η 5-C 5Me 5)CO] complex reveal an unusual η 2-ring edge coordination mode in the latter resulting in a significant elongation of the triphosphacyclopentadienyl ring P–P bond.