Organotin(IV) derivatives containing bis(diphenylphosphine)- and bis(diphenylphosphineoxo)alkanes

摘要

Di-organotin(IV)halides R2SnCl2 (R = Me or Ph) react with bis(diphenylphosphine)methane (DPPM) and bis(diphenylphosphine)ethane (DPPE) in ethanol in aerobic conditions yielding 1:1 adducts [R2SnCl2(DPPM-O-2)] and [R2SnCl2(DPPE-O-2)], respectively, containing the bis(diphenylphosphine) in oxidized form. The 1:1 adduct [SnMe2Cl2(DPPM-O-2)] is composed of separate molecules containing six-coordinate tin, with the ligands coordinated in the bidentate O-2-fashion, whereas [SnMe2Cl2(DPPE-O-2)] is polymeric, with octahedral and centrosymmetric tall trans) tin atoms. In inert atmosphere, the interaction between R2SnCl2 and DPPM or DPPE does not take place. Mono-organotin halides RSnCl3, (R = Me, Bu-n or Ph) react with DPPM and DPPE yielding 1:1 adducts [RSnCl3(DPPM)] (R = Me, Bu-n or Ph) and [RSnCl3(DPPE)] (R = Bu-n or Ph). (C) 2001 Elsevier Science B.V. All rights reserved. [References: 42]