X-Ray Structure Characterization of Palladium (II) Ternary Complexes of Pyridinedicarboxylic and Phthalic Acid with Phenanthroline and Bipyridine

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The crystal structures of the series of four ternary complexes, [Pd(phen)(2, 6-PDCA)]・4H_2O (1) (phen=1, 10-phenanthroline; 2, 6-PDCA=2, 6-pyridinedicarboxylic acid), [Pd(bpy)(2, 3-PDCA)]・3H_2O (2) (bpy=2, 2'-bipyridineand; 2, 3-PDCA=2, 3-pyridinedicarboxylic acid) and [Pd(phen)(PHT)]・2.5H_2O (3) (PHT=o-phthalic acid) and [Pd(bpy)(PHT)]・1.5H_2O (4), are determined and the coordination modes of palladium (II) ternary complexes are characterized. All complexes take the mononuclear Pd (II) complexes, in which central Pd (II) atom of each complex has a similar distorted square-planar four coordination geometry. In all complexes, the aromatic heterocyclic compounds, phen and bpy, behave as a bidentate N, N' ligand. In the complex 1 and 2, 2, 6-PDCA and 2, 3-PDCA behave as a bidentate N, O ligand, and in complex 3 and 4, PHT behaves as a bidentate O, O' ligand.
公益社団法人日本薬学会の論文
2005-04-01