Synthesis and Structural Characterization of New Rhodium-Tin Heterodimetallic Complexes

✍ Scribed by Michaela Kilian; Hubert Wadepohl; Lutz H. Gade

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 288 KB
• Volume: 2008
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200701240

✦ Synopsis

Abstract

Reaction of the triamidostannates(II) MeSi{SiMe~2~N(p‐tol)}~3~SnLi(OEt~2~) (1a) and MeSi{SiMe~2~N(3,5‐xyl)}~3~SnLi(OEt~2~) (1b) with 1/2 molar equiv. of [RhCl(diolefin)]~2~ (diolefin = COD, NBD) and phosphanes, phosphites or isonitriles (“L”) gave the square‐planar complexes [MeSi{SiMe~2~NAryl}~3~SnRh(L)(diolefin)] (Aryl = 3,5‐xyl, p‐tol) in which thestannates are directly bonded to rhodium through Rh–Sn bonds. In contrast, the analogous transformation of 1b with 1/2 equiv. of [RhCl(C~2~H~4~)~2~]~2~ and P__i__Pr~3~ in toluene did not lead to a square‐planar bisethylene complex [MeSi{SiMe~2~N(3,5‐xyl)}~3~SnRh(C~2~H~4~)~2~(P__i__Pr~3~)] but the brown 18e π‐arene complex [MeSi{SiMe~2~N(3,5‐xyl)}~3~SnRh(P__i__Pr~3~)(η^6^‐toluene)] (6). Equilibria of the square planar diolefin complexes with π‐arene systems such as 6 were observed upon their dissolution in toluene.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)