Synthesis, Crystal Structure and Thermal Stability of a Nickel(Ⅱ) Complex with Bicycle[2.2.1]-2-hept

• 作 者: 李薇 李玉林 李昶红 谭雄文
• 机 构: Department of Chemistry and Materials Science, Hengyang Normal University,Department of Materials an
• 出 处: 结构化学
• 发表日期: 2011年09期
• 关键词: dicarboxylic Synthesis bipyridine octahedral coordinated monoclinic distorted ni

The nickel complex {Ni(2,2-bipy)(H2O)3[C8H11O2(COO)]}(H2O)3 with bicycle-[2.2.1]-2-hepten-5,6-dicarboxylic acid [C7H8(COOH)2] and 2,2’-bipyridine (bipy) as ligands has been synthesized and characterized. It crystallizes in monoclinic, space group P , with a = 0.74975(3), b = 1.20309(4), c = 1.30593(4) nm, α = 109.861(2), β = 98.519(2), γ = 90.575(2)o, V = 1.09337(7) nm3, Dc = 1.552 g/cm3, Z = 2, F(000) = 524, the final GOOF = 1.064, R = 0.0397 and wR = 0.1171. The crystal structure shows that the nickel ion is coordinated with four oxygen atoms from one bicycle[2.2.1]-2-hepten-5,6-dicarboxylic acid molecule and three water molecules and two nitrogen atoms from the 2,2′-bipyridine molecule, forming a distorted octahedral coordination geometry. The result of TG analysis shows that the title complex is stable under 200.0 ℃.

The nickel complex {Ni (2,2-bipy) (H2O) 3 [C8H11O2 (COO)]} (H2O) 3 with bicycle- [2.2.1] -2-hepten-5,6-dicarboxylic acid [C7H8 (2) and 2,2’-bipyridine (bipy) as ligands has been synthesized and characterized. It crystallizes in monoclinic, space group P, with a = 0.74975 (3), b = 1.20309 (4), c = 1.30593 ), α = 109.861 (2), β = 98.519 (2), γ = 90.575 (2) o, V = 1.09337 (7) nm3, Dc = 1.552 g / cm3, Z = 2, F , the final GOOF = 1.064, R = 0.0397 and wR = 0.1171. The crystal structure shows that the nickel ion is coordinated with four oxygen atoms from one bicycle [2.2.1] -2-hepten-5,6-dicarboxylic acid molecule and Three water molecules and two nitrogen atoms from the 2,2’-bipyridine molecule, forming a distorted octahedral coordination geometry. The result of TG analysis shows that the title complex is stable at 200.0 ° C.