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Articles by Xiao-Fang Ma
Total Records ( 1 ) for Xiao-Fang Ma
  Hui Liu , Jin-Lei Tian , Wen Gu , Ying-Ying Kou , Li Feng , Xiao-Fang Ma , Dong-Dong Li , Shi-Ping Yan and Dai-Zheng Liao
  An oxamato-bridged heterobinuclear NiIICuII complex [Ni(cyclam)Cu(opba)]2 · 3DMSO (1) has been synthesized, characterized by elemental analysis, infrared spectra and magnetic susceptibility, where cyclam is 1, 4, 8, 11-tetraazacyclotetradecane and opba is o-phenylenebis(oxamato). The complex crystallizes in the triclinic system, space group P1 with a = 12.006(3) Aring, b = 12.783(3) Aring, c = 20.977(5) Aring, agr = 76.634(4)°, β = 75.172(4)°, γ = 80.818(4)° and Z = 2. According to X-ray crystallographic studies, the four-coordinate copper(II) atom is a slightly distorted planar geometry and is linked to nickel(II) through the exo-cis oxygen atoms of [Cu(opba)]2-; the six-coordinate nickel(II) center lies in a highly distorted octahedral environment. Magnetic susceptibility measurements of the complex in the temperature range 2-300 K indicate that the heterobinuclear NiIICuII units are coupled antiferromagnetically with J = -57.38 cm-1, gNi = 2.25 and gCu = 2.02.
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