Reactions of tin tetrachloride with diethyl glutarate. Crystal structures of [Sn2Cl8{µ-C3H6(CO2Et)2}2]·2CH2Cl2 and cis-[SnCl4(H2O)2]·C3H6(CO2Et)2

Abstract

The dimeric compound [Sn₂Cl₈{µ-C₃H₆(CO₂Et)₂}₂]·2CH₂Cl₂1 has been prepared by direct reaction of SnCl₄ with diethyl glutarate in CH₂Cl₂ and its crystal structure has been determined. Each tin atom is octahedrally co-ordinated by four chlorine atoms and two mutually cis carbonyl oxygen atoms of two bridging diethyl glutarate molecules. During the crystallization of 1 the compound cis-[SnCl₄(H₂O)₂]·C₃H₆(CO₂Et)₂2 was formed under the influence of moisture. Its crystal structure revealed a monomeric complex of Sn^IV in which each tin atom is surrounded octahedrally by four chlorine atoms and two water oxygen atoms. A non-co-ordinated ester molecule is hydrogen bonded through carbonyl oxygen atoms to one water molecule.