Two- and Three-Dimensional Hybrid Compounds Formed by 1,2-, 1,3-and 1,4-Cyclohexanedicarboxylates of Zinc

By employing the hydrothermal method, five zinc cyclohexanedicarboxylates (CHDCs) with the compositions, [Zn-2(1,4-CHDC)-(1,10-phen)(4)]center dot(H2O)(2)(NO3)(2) (1), [Zn(1,4-CHDC)] (II), [Zn-3(1,3-CHDC)(3)(4,4'-bipy)] (III), [Zn-5(OH)(2)(1,3-CHDC)(4)] (IV), and [Zn(1,2-CHDC] (V), were prepared and characterised. Compound I is a molecular structure while II, III and V have two-dimensional layered structures. Compounds II, III and V are coordination polymers ((IO2)-O-0) possessing zero-dimensional inorganic connectivity (I-n, n = 0) and two-dimensional organic connectivity (O-m, m = 2). Compound IV is a coordination polymer ((IO3)-O-0) possessing zero-dimensional inorganic connectivity (I-n, it = 0) and three-dimensional organic connectivity (O-m, m = 3). In all these compounds, the CHDC anions are in the (e,e) conformation except in II, where it has the (a,e) conformation.