单核Mn(III)-Shiff碱配合物的晶体结构与性质

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．

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

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.