五配位单核钴配合物的单晶结构和磁性能 |
Crystal Structure and Magnetic Property of a Pentacoordinate Mononuclear Cobalt(Ⅱ) Complex |
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摘要: 制备了五配位单核钴配合物[Co(TMC)Cl]ClO4(1,TMC=1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane)。配合物1结晶于单斜晶系:P21,晶胞参数为a=0.805 95(7)nm,b=1.486 58(12)nm,c=0.813 64(7)nm,β=110.190(2)°,V=0.914 93(13)nm3,Z=2,T=120(2)K。钴与来自TMC配体的4个氮原子和1个氯离子配位,形成了扭曲的四方锥配位构型。磁性测试揭示了高自旋的钴离子具有场诱导的慢弛豫行为。 |
关键词: 五配位 钴(Ⅱ)配合物 磁性能 |
基金项目: 国家自然科学基金(No.21771200,21773316)资助项目 |
Abstract: A pentacoordinate mononuclear cobalt(Ⅱ) complex,[Co(TMC)Cl]ClO4 (1, TMC=1,4,7,10-tetramethyl-1, 4,7,10-tetraazacyclododecane), is synthesized. It crystallizes in the monoclinic P21 with a=0.805 95(7) nm, b=1.486 58(12) nm, c=0.813 64(7) nm, β=110.190(2)°, V=0.914 93(13) nm3, Z=2, T=120(2) K. The Co(Ⅱ) ion is coordinated to four N atoms from the TMC ligand and one Cl- ion. The geometry of cobalt atom is best described as a distorted square pyramid. The magnetic measurements reveal the field induced slow relaxation behavior for the high-spin Co(Ⅱ) ion. |
Keywords: pentacoordinate cobalt(Ⅱ) complex magnetic property |
投稿时间:2018-12-21 修订日期:2019-03-07 |
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张翠娟,Sukhen Bala,倪兆平,童明良.五配位单核钴配合物的单晶结构和磁性能[J].无机化学学报,2019,35(5):910-914. |
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