Organoantimony Compounds: [2,4,6-(MeO)3C6H2]3Sb and {[2,4,6-(MeO)3C6H2]3SbCH2C(O)OEt}I·СHCl3·0.5Н2О: Synthesis and Structure

Abstract

By reacting antimony(III) chloride with 2,4,6-trimethoxyphenyllithium, tris(2,4,6-trimethoxyphenyl)stibine was synthesized and the possibility of its alkylation with ethyliodoacetate was established to form {[2,4,6-(MeO)₃C₆H₂]₃SbCH₂C(O)OEt}I·СHCl₃·0.5Н₂О. Antimony atoms in the Ar₃Sb molecule and the [Ar₃SbCH₂C(O)OEt]⁺ cation, Ar = 2,4,6-(MeO)₃C₆H₂ have distorted trigonal pyramidal [angle CSbC 101.97(4)°] and tetrahedral [angle CSbC 104.5(2)°‒113.6(2)°] coordination, respectively. The structure of the stibonium complex is additionally stabilized by intermolecular interactions, which involve water molecules (I···H 2.815, 2.881 Å) and chloroform C=O···Cl (3.141 Å), I···H (2.793 Å).