Self-assembly of double and triple helices controlled by metal ion stereochemical preference
作者:Claude Piguet、Gerald Bernardinelli、Bernard Bocquet、Anna Quattropani、Alan F. Williams
DOI:10.1021/ja00045a016
日期:1992.9
pseudotetrahedrally coordinated by two bidentate , '-diimine donor groups. The same chromophore is found for each copper ion in the dinuclear complex [Cu₂(bismbmp)₂](ClO₄)₂-H₂0 obtained by reaction of copper(I) with bismbmp. Conductivity measurements and UV-visible spectra show that the dinuclear structure is maintained in solution in polar aprotic solvents, and ¹H-NMR measurements unambigously establish a double-helical
双核双齿配体双[5-(l-methyl-2-(6'-methyl-2'-pyridyl)benzimidazolyl)]methane (bismbmp, 3) 及其单核类似物6-methyl-2-( 1 -甲基苯并咪唑-2-基)吡啶(mbmp,1)被报道。配体 mbmp (1) 与铜 (I) 反应生成 [Cu(mbmp)₂]ClO₄,其晶体结构 (CuC₂₈H₂₆ N₆ClO₄, z = 7.877 (1) A, b = 13.810 (2) A, c = 25.090 (7) A, s = 95.29 (1)°, 单斜晶系, P2₁/c, Z = 4) 显示了一个单核结构,其中 Cu(I) 假四面体由两个双齿 '-二亚胺供体基团配位。在通过铜(I)与bismbmp反应获得的双核络合物[Cu 2 (bismbmp) 2 ](ClO 4 ) 2 -H 2 O中,发现每种铜离子具有相同的发色