Two new zinc-triazole-biphenyldicarboxylate frameworks based on secondary building units (SBUs), namely, Zn-4(mu(4)-O)(trz)(2)(4,4'-bpdc)(2) (1) and Zn-2(trz)(2)(2,4'-bpdc) (2), [Htrz = 1,2,4-triazole, H(2)bpdc = biphenyldicarboxylate] have been synthesized by hydrothermal reactions and characterized by single-crystal X-ray diffraction analyses, X-ray power diffraction, elemental analyses, infrared absorption spectra, and thermogravimetric analyses. Compound 1 is a 2-fold interpenetrating diamond topology constructed from [Zn-4(mu(4)-O)(trz)(2)](4+) SBUs with tetrahedral [Zn-4(mu(4)-O)] core and two trz ligands. Compound 2 is a 2D 6-connected hxl network based on [Zn-2(trz)(2)](2+) SBUs. Additionally, these two compounds show emission properties at room temperature in the solid state. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.