Synthesis, crystal structure and redox properties of bis-imidazolyl-containing copper(II) complexes
作者:Ghezai T Musie、Xiaobao Li、Douglas R Powell
DOI:10.1016/s0020-1693(02)01469-x
日期:2003.5
Abstract Two copper(II) complexes, [Cu(L1)Cl]Cl and [Cu(L2)Cl]Cl, with tetradentate ligands L1=N,N′-bis[(1-methylimidazol-2-yl)methyl]-1,3-diaminopropan-2-ol and L2=N,N′-bis[(1-methylimidazol-2-yl)methyl]-1,3-diaminopropane were prepared and characterized. Ligands L1 and L2 were synthesized by NaBH4 hydrogenation of the corresponding Schiffbases obtained from condensation of 1-methyl-2-imidazolecarboxaldehyde
possible control of metal ion properties by constraining the coordination sphere geometry was introduced by Vallee and Williams with the concept of entasis, which is frequently postulated to be at stake in metallobiomolecules. However, the interactions controlling the geometry at metal centers remain often elusive. In this study, the coordination properties toward copper ions—Cu(II) or Cu(I)—of a geometrically