Models for Copper-Dioxygen Complexes: The chemistry of copper(II) with some planar tridentate nitrogen ligands
作者:Claude Piguet、Bernard Bocquet、Edgar Müller、Alan F. Williams
DOI:10.1002/hlca.19890720218
日期:1989.3.15
solution chemistry of Cu(II) with a series of five planar tridentate nitrogen ligands, 2,6-bis(benzimidazol-2-yl)pyridine (bzimpy, 1), 2,6-bis(l-methylbenzimidazol-2-yl)pyridine (mbzimpy, 2) 2,6-bis(benzothiazol-2-yl) pyridine (bzthpy, 3), 2,6-bis(benzoxazol-2-yl)pyridine (bzoxpy, 4), and 2,2′, 6′, 2″-terpyridyl (terpy, 5) is reported. Electronic and EPR spectra are consistent with the complexes [CuL]2+
具有一系列五个平面三齿氮配体,2,6-双(苯并咪唑-2-基)吡啶(bzimpy,1),2,6-双(1-甲基苯并咪唑-2-基)的Cu(II)溶液化学)吡啶(mbzimpy,2)2,6-双(苯并噻唑-2-基)吡啶(bzthpy,3),2,6-双(苯并恶唑-2-基)吡啶(bzoxpy,4)和2,2'报道了6′,2′-叔吡啶基(terpy,5)。电子和EPR光谱与配合物[CuL] 2+在溶液中基本上具有四方结构,在配体平面中的第四配位点被溶剂占据。与bzimpy,mbzimpy和terpy相比,bzthpy和bzoxpy显示出较小的配体场分裂,并且很容易与铜分解。在配位体的平面中的协调的溶剂分子的取代有Cl观察-和OH - (条件是所述配体具有不含酸性质子)除外三联吡啶所有配体。已经通过电位滴定法在MeCN / H 2 O 1:1中研究了[Cu(mbzimpy)] 2+与咪唑之间的反应,并显示了咪唑在平面中的牢固结合(log