Synthesis and crystal structure of a Chain complex of molybdenum(II) benzoate and 4,4′-bipyridyl in relation to the N2-adsorption property

Abstract

The title compound, a chain adduct of molybdenum(II) benzoate with 4,4′-bipyridyl (4,4′-bpy), catena(tetrakis(μ-benzoato-O,O′)(μ-4,4′bipyridyl-N,N′)dimolybdenum(II)-tetrahydrofuran (1/0.5)), [Mo2(C6H5CO2)4(4,4′-bpy)]n·0.5nTHF, was synthesized; the crystal structure was determined by the single-crystal X-ray diffraction method at 293 K. It crystallizes in the triclinic space group P1 with a = 9.9230(18)Å, b = 11.047(2)Å, c = 17.532(3)Å, α = 91.037(4)°, βb = 100.373(3)°, γ = 107.515(3)°, V = 1796.7(6)Å3, Dx = 1.605 g/cm3, Dm(floatation) = 1.629 g/cm3, and Z = 2. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0383 and 0.1088, respectively, for all 7875 independent reflections. The molecule has a zigzag chain structure with an alternating arrangement of Mo2(C6H5CO2)4 and 4,4′-bpy [Mo-Mo 2.1113(6), 2.1151(6)Å, Mo-N 2.633(3), 2.647(3)Å]. The adsorption isotherm showed a limited adsorbing property with the type II in the IUPAC classification for N2. The specific surface area, SBET, was 2.71 m2 g-1. © The Japan Society for Analytical Chemistry.