Two zinc(II)-2-(4-pyridyl)-4,5-imidazoledicarboxylate frameworks, formulated as {[Zn3(HPIDC)3(DMF)2](DMF)2(H2O)2}n (1) and {[Zn4(HPIDC)4(DMF)4](DMF)2(FMA)2(H2O)}n (2) (H3PIDC=2-(4-pyridyl)-1H-4,5-imidazoledicarboxylic acid, DMF=N,N′-dimethylformamide, FMA=formamide) have been solvothermally synthesized depending on whatever solvents are used. In both structures, the HPIDC2− anions act as tripodal connectors to chelating with three zinc(II) cations while the zinc(II) cations coordinate with three HPIDC2− anions, to form the T-shape molecular building blocks [Znn(HPIDC)n], which further connect in interdigitating or alternating fashion to result in the assembly of two different 3,3-connected networks. The luminescence behaviors and solvent effect were also discussed.