Crystal Structure of a Novel Binuclear Copper(II) Complex with 2-(Methoxycarbonyl)benzoic Acid

Abstract

were made on a BRUKER SMART 1000 CCD diffractometer equipped with graphite crystal monochromatized Mo K a radiation ( l = 0.71073 Å) at 296(2)K. The structure was solved by direct methods with the SHELXS-97 program, and refined anisotropically by full-matrix least-squares methods for all non-H atoms. All H-atoms were added according to theoretical A novel binuclear copper(II) complex with 2-(methoxycarbonyl)benzoic acid (HL), N , N -dimethylformamide (DMF) and methanol [Cu 2 L 4 (DMF)(CH 3 OH)·CH 3 OH] was synthesized. The complex was crystallized in the monoclinic system. The space group was P n with a = 14.410(3)Å, b = 10.540(2)Å, c = 14.496(3)Å, b = 91.082(4)˚, V = 2201.4(9)Å 3 and Z = 2. The final R value was 0.0227. Each Cu(II) ion is coordinated by four carboxylate O donor atoms from four ligands, and by O donor atoms from the solvent molecule, DMF for Cu(1); for Cu(2) it is the O atom of methanol. The whole molecule looks like a “pedal-wheel”. The O–H · O hydrogen bonds between the compound and the solvent molecule stabilize the crystal structure by causing the formation of a one-dimensional chain structure.