Electronic Properties, Redox Behavior, and Interactions with H<sub>2</sub>O<sub>2</sub> of pH-Sensitive Hydroxyphenyl-1,2,4-triazole-Based Oxovanadium(V) Complexes
作者:Wesley R. Browne、Alette G. J. Ligtenbarg、Johannes W. de Boer、Tieme A. van den Berg、Martin Lutz、Anthony L. Spek、František Hartl、Ronald Hage、Ben L. Feringa
DOI:10.1021/ic051848x
日期:2006.4.1
4-triazole-based oxovanadium(V) complexes are reported: 1- [VO2L1]- and 2 [(VOL2)2(OMe)2] (where H2L1 = 3-(2'-hydroxyphenyl)-5-(pyridin-2' '-yl)-1H-1,2,4-triazole, H3L2 = bis-3,5-(2'-hydroxyphenyl)-1H-1,2,4-triazole). The ligand environment (N,N,O vs O,N,O) is found to have a profound influence on the properties and reactivity of the complexes formed. The presence of the triazolato ligand allows for pH
报道了两种基于1,2,4-三唑的氧钒(V)配合物的合成和光谱表征:1- [VO2L1]-和2 [(VOL2)2(OMe)2](其中H2L1 = 3-(2 '-羟基苯基)-5-(吡啶-2''-基)-1H-1,2,4-三唑,H3L2 =双-3,5-(2'-羟基苯基)-1H-1,2,4-三唑)。发现配体环境(N,N,O与O,N,O)对形成的配合物的性质和反应性具有深远的影响。三唑基配体的存在允许光谱和电化学性质的pH调节,以及在过氧化氢存在下配合物的相互作用和稳定性。钒(IV)的氧化态是通过电化学方法生成的,并通过UV-vis和EPR光谱进行了表征。对于2,在酸性条件下,甲醇盐配体与溶剂快速交换[特别是,