Substituent effects in the polarographic reduction of t-Butyl phenyl ketones and methyl benzoates complexed with Cr(C0)3
作者:A Ceccon、M Gentiloni、A Romanin、A Venzo
DOI:10.1016/s0022-328x(00)98068-9
日期:1977.3
The effect of substituents in the aromatic ring on the half-wave potentials of the polarographic reduction of (t-butyl phenyl ketone)- and (methyl benzoate)-tricarbonylchromiums in dimethylformamide have been studied. The Hammett relationship is satisfactorily obeyed for both series of compounds, and the ϱ values are practically equal to those measured for the analogous uncomplexed substrates. The
研究了芳环中取代基对二甲基甲酰胺中(叔丁基苯基酮)-和(苯甲酸甲酯)-三羰基铬的极谱还原半波电势的影响。对于这两个系列的化合物,均令人满意地遵守了哈米特关系,并且ϱ值实际上等于对类似的非复杂底物测得的值。结果是根据自由基阴离子从自由配体到配位配体转变后电子结构的变化来解释的。