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    题名: Antiferro- and Ferromagnetic Behaviors of Two New m1,3-N3 and m1,1-N3 Bridged Dinuclear Nickel(II) Complexes with 2,6-Bis(2-pyridyl)-4(1H)-pyridone and 2,6-Dimethyl-2,3-bis (2-pyridyl)quinoxaline Ligands
    作者: 魏和祥;Wei, Ho-hsiang;廖俊源;Liao, Chun-yuan;鄭勝權;Cheng, Sheng-chuan;Sasankasekhar Mohanta
    贡献者: 淡江大學化學學系
    关键词: Azide bridged;Dinickel(II);Crystallographic equivalence;Distortion of azide bridge
    日期: 2002-12
    上传时间: 2010-12-01 10:11:59 (UTC+8)
    出版者: 臺北縣:淡江大學
    摘要: Two new N3-bridged dinuclear nickel(II) complexes, [Ni(ddqx)2 (μ1,3-N3)]2(ClO4)2⋅8CH3OH 1 and [Ni(tpd)(μ1,1-N3)(H2O)]2 2, (ddqx = 2,6-dimethyl-2,3-bis(2-pyridyl)quinoxaline and Htpd = 4-terpyridone = 2,6-bis(2-pyridyl)-4(1H)-pyridone), have been synthesized. Complex 1 crystallizes in the orthorhombic system with Ccca space group; the structure consists of isolated dimer and each Ni(II) atom is coordinated by two bidentate ddqx ligands and two end-to-end μ1,3-N3 groups. Complex 2 crystallizes in monoclinic P21/n space group; the structure consists of hydrogen-bonding linked 2-D chain of dinuclear Ni(II) complex, and each Ni(II) atom is coordinated by tridentate tpd ligand, water molecule and bridging μ1,1-N3 ligand; the hydrogen bonding formed between the hydrogen atom of H2O and oxygen atom of tpd ligand. Magnetic susceptibility data, measured from 2-300 K, reveal that complex 1 exhibits antiferromagnetic interaction with J = −29 cm-1, D = 10 cm-1, g = 2.0, whereas complex 2 exhibits ferromagnetic interaction with J = 17 cm-1, D = −8.5 cm-1, g = 2.18. The magneto-structural correlation has been discussed.
    關聯: 淡江理工學刊=Tamkang journal of science and engineering 5(4),頁129-136
    显示于类别:[化學學系暨研究所] 期刊論文

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