Two cadmium coordination polymers with bridging acetate and phenyl-enedi-amine ligands that exhibit two-dimensional layered structures.

ABSTRACT

Poly[tetra-µ2-acetato-κ8OO'-bis-(µ2-benzene-1,2-di-amine-κ2NN')dicadmium], [Cd2(CH3COO)4(C6H8N2)2] n , (I), and poly[[(µ2-acetato-κ2OO')(acetato-κ2O,O')(µ2-benzene-1,3-di-amine-κ2NN')cadmium] hemihydrate], {[Cd(CH3COO)2(C6H8N2)]·0.5H2O} n , (II), have two-dimensional polymeric structures in which monomeric units are joined by bridging acetate and benzenedi-amine ligands. Each of the CdII ions has an O4N2 coordination environment. The coordination geometries of the symmetry-independent CdII ions are distorted octa-hedral and distorted trigonal anti-prismatic in (I) and distorted anti-prismatic in (II). Both compounds exhibit an intra-layer hydrogen-bonding network. In addition, the water of hydration in (II) is involved in inter-layer hydrogen bonding.