Two cadmium coordination polymers with bridging acetate and phenyl­enedi­amine ligands that exhibit two-dimensional layered structures

Poly[tetra-μ(2)-acetato-κ(8) O:O′-bis­(μ(2)-benzene-1,2-di­amine-κ(2) N:N′)dicadmium], [Cd(2)(CH(3)COO)(4)(C(6)H(8)N(2))(2)](n), (I), and poly[[(μ(2)-acetato-κ(2) O:O′)(acetato-κ(2) O,O′)(μ(2)-benzene-1,3-di­amine-κ(2) N:N′)cadmium] hemihydrate], {[Cd(CH(3)COO)(2)(C(6)H(8)N(2))]·0.5H(2)O}(n), (II), have two-dimensional polymeric structures in which monomeric units are joined by bridging acetate and benzenedi­amine ligands. Each of the Cd(II) ions has an O(4)N(2) coordination environment. The coordination geometries of the symmetry-independent Cd(II) ions are distorted octa­hedral and distorted trigonal anti­prismatic in (I) and distorted anti­prismatic in (II). Both compounds exhibit an intra­layer hydrogen-bonding network. In addition, the water of hydration in (II) is involved in inter­layer hydrogen bonding.