Complexes of [CdL2(NO3)(2)]center dot 1.5H(2)O and [Ag-2(mu-L)(2)(NO3)(2)] were synthesized by the reactions of 2-p-methylphenyl-5-(2-pyridyl)-1,3,4-thiadiazole (L) with Cd(NO3)(2)center dot 4H(2)O and AgNO3, respectively. Their structures were determined by single crystal X-ray diffraction. The photophysical property and thermal stability were characterized by FT - IR, UV - Vis absorption, fluorescence, and thermogravimetric analysis (TGA). Both complexes belong to the triclinic system with space group p - 1. The central metal of [CdL2(NO3)(2)]center dot 1.5H(2)O has a distorted octahedral geometry [CdN4O2], while two central Ag(I) atoms of [Ag-2(mu-L)(2)(NO3)(2)] exhibit distorted tetrahedral geometries [AgN3O].