A new oxamato-bridged heterotrinuclear NiCuNi complex with irregular spin state structure: Synthesis, spectroscopy, crystal structure and magnetism期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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A new oxamato-bridged heterotrinuclear NiCuNi complex with irregular spin state structure: Synthesis, spectroscopy, crystal structure and magnetism

Authors:	Qing-Lun Wang Li-Na Zhu Dai-Zheng Liao Shi-Ping Yan Zong-Hui Jiang Peng Cheng Guang-Ming Yang

Institution:	^aDepartment of Chemistry, Nankai University, Tianjin 300071, China ^bState Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China ^cState Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China

Abstract:	A new oxamato-bridged Ni^IICu^IINi^II species, Ni(tacn)(H₂O)]₂μ-Cu(pba)](ClO₄)₂·6H₂O 1, (tacn=1,4,7-triazacyclononane; pba=1,3-propylenebis(oxamato)) has been synthesized and structurally as well as magnetically characterized. Complex 1 has a discrete trinuclear Ni^IICu^IINi^II structure: Two nickel(II) ions are bridged by Cu(pba)]²⁻ anion, macrocyclic ligand tacn works as terminal ligand of the nickel(II) center. The magnetic data of compound 1 was analyzed by means of leading to g_Cu=2.19, g_Ni=2.18, J=−112.8 cm⁻¹, D=±4.31 cm⁻¹. The parameters are compared with the similar complexes and the irregular spin state structure of complex 1 is also described here.

Keywords:	Heterotrinuclear Ni^IICu^IINi^II complex Crystal structure Magnetic properties Irregular spin state
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