Treatment of Pd2Cl2(CNC6H3Me2-2,6)(4) (1) with Mo-2(O2CCF3)(4) (2) in dichloromethane afforded an infinite zigzag chain {[Pd2Cl2(CNC6H3Me2-2,6)(4)][Mo-2(O2CCF3)(4)]}(n) (3), where two metal-metal bonded dinuclear Pd-Pd and Mo-Mo units were bridged by chloro atoms, The Mo-Mo distance (2.1312(3) A) of 3 is significantly elongated compared to that of 2 (2.090(4) Angstrom) and lies in the range of that of the quadruple Mo-Mo bonded complexes. Such elongation might be attributed to the axial donation of the chloro atoms of the Pd-Pd unit to the Mo-Mo moiety.