Under hydrothermal conditions, a new two-dimensional (2D) zinc coordination polymer, [Zn(tdc)(bimm)](n), was synthesized based on thiophene-2,5-dicarboxylic acid (H(2)tdc) and 1,2-bis(imidazol-1-yl)methane (bimm) mixed ligands. Single crystal X-ray structural analysis shows adjacent Zn2+ ions are connected by tdc(2-) anions to form a one-dimensional (1D) [ZnL](n) chain in the complex. Then flexible bimm ligands expand 1D chains into a 2D layer by linking neighboring Zn2+ ions. These adjacent layers are further stacked together by direct C-H supramolecular interactions, generating a double-layer 2D supramolecular structure. In topology, the 2D lay could be rationalized to a uninodal 4-connected non-interpenetrated sql net with {4(4).6(2)} topology. In addition, solid state properties such as thermogravimetric analysis and luminescence were also investigated.