Synthesis and Crystal Structure of a Bipy Bridged Binuclear Cu~Ⅱ Complex Containing Aminomethanesulf

• 作 者: 蔡成翔 何坤欢 蒋毅民
• 机 构: School of Chemistry and Chemical Engineering, Guangxi Normal University,Department of Chemistry and
• 出 处: 结构化学
• 发表日期: 2009年10期
• 关键词: bipyridine intermolecular supramolecular coordinated monoclinic bonds distorted

The title complex [Cu2(Sams)2(H2O)2(bipy)]·(H2O) 1 (H2Sams = N-(2-hydroxybenzy) aminomethanesulfonic acid, bipy = 4,4’-bipyridine) has been synthesized by the reaction of Cu-(CH3COO)2·H2O, H2Sams and 4,4’-bipyridine in aqueous methanol. It was characterized by IR, elemental analysis, thermogravimetric analysis (TGA) and X-ray diffraction analysis. Complex 1 crystal- lizes in monoclinic, space group P21/n with a = 10.9533(17), b = 8.3408(13), c = 16.714(3), β = 101.295(4)°, V = 1494.3(4) 3 and Z = 2. The asymmetric unit is comprised of a tridentate Schiff base Sams2-anionic ligand, a 4,4’-bipyridine and two coordinated water molecules, thus forming a binuclear copper(II) complex. The coordination environment at CuII center is described as a slightly distorted square pyramidal geometry. Via intermolecular hydrogen bonds C(10)–H(10)…O(3) and C(13)–H(13)…O(3), an infinite supramolecular chain is yielded. A number of intermolecular hydrogen bonds greatly contribute to the stabilization of the solid-state structure for 1.

The title complex has been synthesized by the reaction of (H2Sams = N- (2-hydroxybenzy) aminomethanesulfonic acid, bipy = 4,4’-bipyridine) of Cu- (CH3COO) 2 · H2O, H2Sams and 4,4’-bipyridine in aqueous methanol. It was characterized by IR, elemental analysis, thermogravimetric analysis (TGA) and X-ray diffraction analysis. Complex 1 crystal- lizes in monoclinic Space group P21 / n with a = 10.9533 (17), b = 8.3408 (13), c = 16.714 (3) , β = 101.295 (4) °, V = 1494.3 (4) 3 and Z = 2. The asymmetric unit is comprised of a tridentate Schiff base Sams2-anionic ligand, a 4,4’-bipyridine and two coordinated water molecules, thus forming a binuclear copper (II) complex. The coordination environment at CuII center is described as a slightly distorted square pyramidal geometry. Via intermolecular hydrogen bonds C (10) -H (10) ... O (3) and C (13) -H (13) ... O (3), an infinite supramolecular chain is yielded. A number of intermolecular hydrogen bonds greatly contribute to the stabilization of the solid-state structure for 1.