Synthesis and structural studies on silver–tin complex salts with bis(diphenylarsino)methane and bis(diphenylphosphino)methanet

Abstract

Three new silver–tin complex salts with bis(diphenylarsino)methane (dpam) and bis(diphenylphosphino)methane (dppm) have been synthesized. The i.r. and ³¹P and ¹¹⁹Sn n.m.r. spectra as well as the conductivity data are reported and discussed together with the X-ray crystal structure of one of them, namely [Ag₃Cl₂(dppm)₃][SnPh₂(NO₃)₂Cl]·CH₃OH. The trinuclear silver complex contains bridging chlorine and dppm ligands. All the three independent silver atoms are four-co-ordinated in a distorted tetrahedral configuration involving two chlorine and two phosphorus atoms. The co-ordination polyhedron about tin can be described as a distorted pentagonal bipyramid, having a chlorine atom and four nitrate oxygen atoms in the equatorial plane and two phenyl carbons at the apices.