Synthesis, Crystal Structure and Magnetic Properties of a New cis-Heterotrinuclear [CuL-Mn

Synthesis, Crystal Structure and Magnetic Properties of a New cis-Heterotrinuclear [CuL-Mn-CuL] Complex

LI Fuan;LIU Hongling;LI Guopeng;TAO Ruojie

【期刊名称】《中国化学（英文版）》 【年(卷),期】2009(027)008

【摘要】A new dissymmetrical Schiff base copper precursor complex KCuL and a cis-heterotrinuclear complex with the chemical formula [(CuL)2Mn(H2O)2]·CH3OH,have been synthesized and characterized by means of elemental analysis and IR,where H3L=(E)-N-[2-(5-chloro-2-hydroxybenzylideneamino)ethyl]-2-hydroxybenzamide.The

crystal

structure of the cis-heterotrinuclear complex was determined by X-ray analysis.Each cell unit of the complex contains one neutral cis-heterotrinuclear molecule and two disordered methanol molecules.The central Mn2+ ion is located at the site of O6 with a distorted octahedral geometry,and two coordination anions [CuL]- are aligned in cis-configuration.The magnetic properties indicate that the trinuclear complex not only has antiferromagnetic interactions in the internal trinuclear molecule but also has weak ferromagnetic interactions between the trinuclear units.The best-fit parameters are J=-12.1 cm-1,g=2.20 and zj'=1.37 cm-1. 【总页数】5页(1476-1480)