溶剂供电子效应常数确定和位阻效应——红外光谱溶剂效应机理研究(Ⅲ)

STEREO-HINDRANCE EFFECT——STUDY ON MECHANISM OF SOLVENT EFFECT IN INFRARED SPECTRA(Ⅲ)

为20种有机溶剂制定了供电子效应常数,首次将空间位阻效应定量地应用于溶剂效应,并为这些溶剂确定了供电子位阻效应常数。用这些溶剂效应参数处理了乙醇、异丙醇、叔丁醇和4-甲荃-2、6-二叔丁荃苯酚的羟茎伸缩振动波数,以及氮仿的C-Cl键伸缩振动波数的溶剂效应,均得到了极好的相关关系。

The stereo-hindrance effect was first quantitatively applied in the study on solvent effects. Electron donor effect constants and electron donor hindrance constants were proposed for 20 solvents. The on stretching vibration wave numbers of 6 hydroxyl compounds and C-Cl bond of CHCl_3 were treated by these parameters in good correlation