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Keywords:

  • Cadmium;
  • Chromium;
  • Carb­onyl ligands;
  • Sandwich complexes;
  • Co­ordination modes

Abstract

The reaction of (benzoic acid)tricarbonylchromium [(η6-C6H5COOH)Cr(CO)3] with cadmium acetate in methanol or DMF led to the formation of the dinuclear cadmium compounds [Cd2{(η6-C6H5COO)Cr(CO)3}4(MeOH)4] (1) or [Cd2{(η6-C6H5COO)Cr(CO)3}4(DMF)4] (2) containing four organometallic ligands with four methanol or DMF molecules coordinated to the cadmium atoms. The reaction of (benzoic acid)tricarbonylchromium [(η6-C6H5COOH)Cr(CO)3] and cadmium acetate with 1,10-phenanthroline (1,10-phen) afforded the dinuclear cadmium complex [Cd2{(η6-C6H5COO)Cr(CO)3}4(1,10-phen)2] (3) with two 1,10-phenanthroline and four organometallic ligands. The reaction of (benzoic acid)tricarbonylchromium [(η6-C6H5COOH)Cr(CO)3] with cadmium acetate in the presence of 4,4′-bipyridine (4,4′-bipy) led to the one-dimensional coordination polymer [Cd2{(η6-C6H5COO)Cr(CO)3}4(4,4′-bipy)2·3DMF]n (4) containing a dinuclear cadmium complex as a repeating unit. The solid-state structures of all the compounds were determined by single-crystal X-ray diffraction.