Structural diversity in gallium(iii) complexes of the tripodal triarsine MeC(CH2AsMe2)3

Dalton Transactions Pub Date: 2007-04-13 DOI: 10.1039/B702791E

Abstract

The preparation and crystal structures of the first examples of gallium halide complexes with the tripodal arsine, MeC(CH2AsMe2)3, reveal three distinctly different coordination modes for the ligand; the neutral [{μ3-MeC(CH2AsMe2)3-κAs:κAs′:κAs″}(GaI3)3] with the triarsine coordinating to three GaI3 units, [{Me2AsCH2C(Me)(CH2AsMe2)2-κ2AsAs′}GaCl2][GaCl4] involving bidentate chelation to a GaCl2+ cationic unit with the third As donor atom uncoordinated, and [{MeC(CH2AsMe2)3-κAs:κ2As′As″}(GaCl3)(GaCl2)][GaCl4] in which the triarsine forms a bidentate chelate to the GaCl2+ unit and the third As donor atom binds to a further GaCl3 unit.

Graphical abstract: Structural diversity in gallium(iii) complexes of the tripodal triarsine MeC(CH2AsMe2)3
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