摘要

Treatment of NaO(2)CCH=C(Me)Fc with cadmium acetate and iron(II) sulfate in the presence of 2,2'-bipy yielded [Cd(2)Fe(mu-O(2)CCH=C(Me)Fc)(2)(mu(2)-O(2)CCH=C(Me)Fc)(2)(mu(2)-eta(2)-O(2)CCH=C(Me)Fc)(2)(2,2'-bipy)(2)] center dot 2H(2)O (1); while from NaO(2)CC(6)H(4){C(O)Fc-o}, cadmium acetate, and pbbm the product was {[Cd(eta(2)-O(2)CC(6)H(4){C(O)Fc-o})(2)(pbbm)] center dot 0.5H(2)O}(n) (2) [Fc = (eta(5)-C(5)H(5))Fe(C(5)H(4)-eta(5)); 2,2'-bipy = 2,2'-bipyridyl; pbbm = 1,1'-(1,5-pentamethylene)bis-1H-benzimidazole]. Compounds 1 and 2 have been characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. In centro-symmetric crystalline 1, the Fe and the two flanking atoms are six-coordinate; the three carboxylato ligands between the Fe and a Cd atom have different coordination modes. Crystalline 2 consists of an infinite polymeric chain, in which adjacent [Cd(eta(2)-O(2)CC(6)H(4){C(O)Fc-o})(2)] units are linked by pbbm ligands; thus each Cd atom is six-coordinate. Some electrochemical properties of the two complexes are reported.