Computer-aided electron paramagnetic resonance spectroscopy in the speciation of pH-dependent equilibria for copper {[2,2′-[1-(1-ethoxyethyl)-1,2-ethanediylidene]bis[N,N-dimethylhydrazinecarbothioamidato]](2-)N<sup>2</sup>,N<sup>2</sup>′,S,S′} complex
作者:Nadia Marchettini、Rebecca Pogni、Alicia Diaz、Riccardo Basosi
DOI:10.1039/ft9908602575
日期:——
An extensive reinvestigation of EPR spectra of [2,2′-[1-(1-ethoxyethyl)-1,2-ethanediylidene]bis[N,N-dimethyl-hydrazinecarbothioamidato]}(2-)N2,N2′,S,S′]copper(II)(CuKTSM2) was performed over a large pH range at room temperature. A thorough speciation was possible only by massive use of computer simulation of spectra at room temperature and careful exploration of linewidth details. EPR data vs. pH
[[2,2'-[1-(1-乙氧基乙基)-1,2-乙二亚基]双[ N,N-二甲基-肼基甲硫代酰胺基酰胺]}(2-)N 2,N 2 '的EPR光谱进行了广泛的重新研究,S,S ']铜(II)(CuKTSM 2)在室温下在较大的pH范围内进行。只有在室温下大量使用计算机模拟光谱并仔细研究线宽细节,才能形成彻底的形态。CuKTSM 2的EPR数据与pH值清楚地确定了溶液在pH = 1.7和pH = 6.4时存在两种可区分的形式。通过基于计算机辅助EPR光谱的新策略以及选择合适的微波频率,可以精确地区分自旋哈密顿量参数和相关时间。