A new heterometallic MOF compound, [ZnNa(m-BDC)(2)](NH2)-N-.(CH3)(2) (MOF-CJ2), has been solvothermally synthesized and characterized by single-crystal X-ray diffraction, X-ray powder diffraction, ICIP, TGA, IR, and photoluminescence spectroscopy analyses. It crystallizes in monoclinic space group C2/c (No. 15) with a = 13.277(6) angstrom, b = 14.323-(7) angstrom, c = 11.328(6) angstrom, and beta = 111.73(2)degrees. Its framework is constructed from M-O-C (M = Na and Zn) rods composed of alternating six-coordinated Na(I) centers and four-coordinated Zn(II) centers. These rods are linked by m-BDC links to form primitive cubic (pcu) type rod packing. This framework exemplifies the first open-framework heterometallic MOF structure based on the assembly of infinite rod building units.