Tetrakis[μ-3-(3-hydroxyphenyl)propenoato]bis{aqua(2,2′-bipyridine)[3-(3-hydroxyphenyl)propenoato]neodymium(III)} 2,2′-bipyridine disolvate dihydrate

Abstract

The dinuclear title compound, [Nd2(C9H7O3)6(C10H8N2)2]·2C10H8N2·2H2O, was synthesized under hydrothermal conditions. The centrosymmetric complex consists of two nine-coordinated Nd3+ cations, six 3-hydroxycinnamate anions and two chelating 2,2′-bipyridine molecules. The coordination geometry around the cations can be best described as distorted tricapped trigonal-prismatic. The carboxylate groups show different coordination and bridging modes. Two of them chelate to one Nd3+ cation, two bridge the two cations in a bis-monodentate fashion, and two chelate to one and bridge monodentately to the symmetry-related Nd3+ cation. The dinuclear molecule is surrounded by two 2,2′-bipyridine solvent and two water molecules. Extensive O—H...O and O—H...N hydrogen-bonding interactions between the components lead to the formation of a three-dimensional network.