物理化学学报 >> 1998, Vol. 14 >> Issue (10): 881-886.doi: 10.3866/PKU.WHXB19981005

研究论文 上一篇    下一篇

单核Mn(III)-Shiff碱配合物的晶体结构与性质

尹业高, 张恭启, 黄永德   

  1. 荆州师范专科学校化学系,湖北荆州市 434100|香港大学化学系
  • 收稿日期:1998-01-24 修回日期:1998-03-10 发布日期:1998-10-15
  • 通讯作者: 尹业高

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

Yin Ye-Gao, Zhang Gong-Qi, Huang Yong-De   

  1. Department of Chemistry,Jingzhou Techers College,Jingzhou,Hubei 434100|Department of Chemistry,The University of Hong Kong
  • Received:1998-01-24 Revised:1998-03-10 Published:1998-10-15
  • Contact: Yin Ye-Gao

摘要:

报导了两个Schiff碱配体的单核Mn(Ⅲ)配合物([Mn(Ⅲ)(L1)(H2O)]CIO4•ZH2O(1)和[Mn(Ⅲ)(L2)H2O)]CIO4•ZH2O(2))的合成、晶体结构及性质. 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)Å,b=22.393(5)Å,c=8.960(3)Å,V=2193(1)Å 3,Z=4.2的晶体属于正交晶系,P212121空间群,α=17.345(3)Å,b=17.905(2)Å,c=7.789(1)Å,V=2418.9(6)Å 3,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.

关键词: Mn(III)配合物, Shiff碱, 电化学

Abstract:

This work reports the syntheses, crystal structures and properties of two mononuclear Mn(Ⅲ)-Schiff base complexes, [Mn(Ⅲ)(L1)(H2O)]ClO4•2H2O 1 and [Mn(Ⅲ)(L2)]ClO4•2H2O 2. X-ray crystallographical structure analysis confirms that the crystal of 1 belongs to the orthorhombic crystal system and Pna21 space group. Its cell parameters areα=10.932(7) Å, b=22.393(5) Å, c= 8.960(3) Å, V= 2193(1) Å 3, Z=4. Crystal of 2 belongs to the same crystal system and P212121 space group. Its cell parameters areα= 17.345(3) Å, b= 17.905(2) Å, c= 7.789(1) Å, V= 2418.9(6) Å 3, Z= 4. Electrochemical measurements show that complex 2 is a more stable electrochemical product and complex 1is more sensitive to the external electric field, by which the coordmation environment is confirmed to be a decisive factor m the determination of the stability of compound.

Key words: Manganese(III) complexes, Schiff base, Electrochemistry