Tris-(1,2- N, N-dimethylaminomethylferrocenyl)stibine and its heterotrimetallic complex

Abstract

New tertiary chloro-bis(1,2- N, N-dimethylaminomethylferrocenyl)stibine ( 1) and tris-(1,2- N, N-dimethylaminomethylferrocenyl)stibine ligand ( 2) containing CH 2NMe 2 pendenant arm at the ortho-position have been synthesized. Stibine ( 2) reacts with PtCl 4 2− and hetero trimetallic cis-PtCl 2L ( 3) complex is obtained, where stibine ( 2) acts as a bidentate ligand. All these compounds were characterized by various physicochemical methods and their molecular structures were determined by X-ray diffraction analyses. It is to be noted that tris(1,2-aminomethylferrocenyl)stibine represents the first example of a structurally characterized ferrocenyl pnictogen where three 1,2-disubstituted ferrocenyl groups are attached to the central antimony atom and phosphorus analogue of the stibine is missing in the literature. Stibine ( 1) shows a hypervalent Sb–N interaction while stibine ( 2) does not show this interaction in solid state.