Synthesis and Crystal Structure of Dissymmetrical Double Schiff Base Cu(Ⅱ) Homobinuclear and Cu(Ⅱ)-Mg(Ⅱ)-Cu(Ⅱ) Heterotrinuclear Complexes

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2006,（11）
• 页码范围: 1559-1563
• 页数: 5页
• 语种: 英文

摘要

Homobinuclear complex (HCuL)2 (1) (H3L: N-3-carboxylsalicylidene-N′-salicylaldehyde-1,2-diaminoethane)was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined through X-ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326(5) nm, b=0.88861(18) nm, c= 1.3738(3) nm, β=96.95(3)°, Z=4, R1 =0.0520, wR2=0.1185.(HCuL)2 is a dimeric molecule and has extended phenolic oxygen-bridged structure. In addition, using mononuclear complex HCuL as building blocks, Cu(Ⅱ)-Mg(Ⅱ)-Cu(Ⅱ) heterotrinuclear complex 2 was synthesized, and its crystal structure also has been determined by X-ray analysis. The crystal of complex 2 is of monoclinic system, space group Pc, a=1-1816(2) nm, b=1.5599(3) nm, c=1.9642 (4) nm, β=98.22°, Z=2, R1=0.0701, wR2=0.1498.Each dissymmetrical cell unit of complex 2 contains two heterotrinucler neutral molecules:{[CuL(H2O)]Mg[CuL(CH3OH)] } and { [CuL]Mg[CuL(H2O)] }.