Two metal-organic framework compounds, [Zn-3(1,4-BDC)(3)(Py)(2)]center dot 2(1,4-dioxane) (MOF-CJ6) and [Cd-3(bpdc)(3)(H2O)(2)] (MOF-CJ7). have been solvothermally synthesized and characterized by single crystal X-ray diffraction, X-ray powder diffraction, ICP, IR and photoluminescence spectroscopy an lyses, respectively. MOF-CJ6 crystallizes in monoclinic, space group P-2(1)/n (no. 14) 6 with a = 14.6886(14) angstrom, b = 9.6194(6) angstrom, c = 15.9161(16) angstrom and beta = 105.687(6)degrees. Its framework can be described as a 2-D 3(6) tessellated net based on the assembly of trimeric Zn-3(CO2)(6) clusters and 1,4-benzenedicarboxylates ditopic links. The 2-D nets can be further linked into a novel 3-D supramolecular hexagonal lattice (hex) network through pi-pi packing interaction. MOF-CJ7 crystallizes in trigonal, space group R-3 (no. 148) with a = 14.1129(8) angstrom, b = 14.1129(8) angstrom., c = 20.1168(13) angstrom and gamma = 120 degrees. MOF-CJ7 exhibits analogous framework topology with that of MOF-CJ6, consisting of trimeric Cd3(A)(CO2)(6) clusters and 4,4'-biphenyldicarboxylate links. (C) 2006 Elsevier Ltd. All rights reserved.