Synthesis and structure of [{Sn(μ–PCy)}3(Na·PMDETA)2], containing an electron-deficient [{Sn(μ–PCy)}3]2− dianion†
Abstract
The reaction of CyPHNa with Sn(NMe2)2 in the presence of PMDETA (= {Me2NCH2CH2}2NMe) gives the title compound [{Sn(μ–PCy)}3(Na·PMDETA)2] (1), containing an electron-deficient [(Sn(μ–PCy)}]32− dianion with a novel two-electron, three centre (2e–3c) bonding arrangement.