Abstract
Two cyano-bridged heterobimetallic coordination polymers, [{Mn(dpa)2}2W(CN)8·CH3CN·4H2O]n (1) (dpa = 2,2′-dipyridylamine) and [Mn2(H2O)4{W(CN)8}·3H2O]n (2), have been synthesized and characterized structurally and magnetically. X-ray analysis shows that complex 1 is a one-dimensional (1-D) polymer of W2(CN)4Mn2 square units in which adjacent square fragments are interlinked by sharing [W(CN)8]4− moieties to form an infinite chain. Complex 2 is a three-dimensional (3-D) polymer, which shows an unforeseen structure, exhibiting a 3-D open network with a 1-D channel (ca.13.21 A × 11.82 A). Fitting of the magnetic properties indicates that both polymers exhibit weakly antiferromagnetic interactions between the adjacent Mn ions.
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