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单核Mn(Ⅲ)-Shiff碱配合物的晶体结构与性质

Crystal Structure and Properties of Mononuclear Mn(Ⅲ)-Schiff Base Complexes

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【作者】 尹业高张恭启黄永德

【Author】 Yin Yegao(Department of Chemistry, Jingzhou Teachers College, Jingzhou, Hubei 434100)Cheuug Kung-Kai; Wong Wing-Tak(Department of Chemistry The University of Hong Kong)

【机构】 荆州师范专科学校化学系!湖北荆州市434100香港大学化学系

【摘要】 报导了两个Schiff碱配体的单核Mn(Ⅲ)配合物([Mn(Ⅲ)(L1)(H2O)]4CIO。·ZH。O(1)和[Mn(ffi)(LZ)厂Ic。·ZH。O(2》的合成、晶体结构及性反X一衍射晶体结构分析证实:配合物1的晶体属于正交晶系,Pna21空间群.其晶胞参数为α=10.932(7)A,b=22.393(5)A,c=8.960(3)A,V=2193(1)A3,Z=4.2的晶体属于正交晶系,P212121空间群,α=17.345(3)A,b=17.905(2)A,c=7.789(1)A,V=2418.9(6)A3,Z=4.电化学研究结果显示:配合2是稳定的电化学产物,而1在电场作用下容易歧化.由此说明配位环境是影响化合物稳定性的重要因素.

【Abstract】 This work reports the syntheses, crystal structures and properties of two mononuclear Mn(Ⅲ)-Schiff base complexes, [Mn(Ⅲ)(L1)(H2O)]JClO4.2H2O1 and [Mn(Ⅲ)(L2)]ClO4.2H2O2. X-rity crystallographical structure analysis confirnis that the crystal of 1 belongs to the orthorhombic crystal system and Pna21 space group. Its cell parameters are a=10.932(7)A, b=22.393(5)A, c= 8.960(3) A, V= 2193(1)A3, Z=4. Crystal of 2 belongs to the same crystal systemand P212121 space group. Its cell parameters are a= 17.345(3)A, b= 17.905(2)A, c= 7.789(1)A,V= 2418.9(6)A3, Z= 4. Electrochemical measurements show that complex 2 is a more stableelectrochemncal product and complex 1is more sensitive to the external electric ficld, by which thecoordmation environment is comfrmed to be a decisive factor m the determmnation of the stability of compound.

  • 【文献出处】 物理化学学报 ,ACTA PHYSICO-CHIMICA SINICA , 编辑部邮箱 ,1998年10期
  • 【分类号】O627
  • 【被引频次】2
  • 【下载频次】123
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