Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (10): 881-886.doi: 10.3866/PKU.WHXB19981005

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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

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