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Crystal Structure and Magnetic Behavior of Copper(II) Dimethylphosphinate: A Chain Polymer Containing Triangular Trimetallic Bis(&mgr;-dimethylphosphinato)copper(II) Units.

The title compound has a novel structure involving trimetallic copper(II) units in which the metal ions are doubly bridged by phosphinate ligands in a triangular motif. Two phosphinates in each trimer are also involved in intertrimer bridges to copper ions in neighboring trimers, resulting in an overall extended chain structure. Magnetic studies reveal moderate intratrimer antiferromagnetic exchange (J = −5.9 cm-1) accompanied by weak intertrimer interactions (zJmf = −0.27 cm-1).