Infrared study of intramolecularly hydrogen bonded aromatic carbonyl containing compounds in various solvents

被引：16

作者：

Nyquist, RA

Putzig, CL

Clark, TL

McDonald, AT

机构：

[1] Dow Chemical Company, Analytical Sciences Laboratory, 1897F Building, Midland

来源：

VIBRATIONAL SPECTROSCOPY | 1996年 / 12卷 / 01期

关键词：

intramolecularly H-bonded aromatic carbonyl containing compounds;

D O I：

10.1016/0924-2031(96)00005-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The intramolecularly hydrogen bonded OH group sterically alters the spacial distance between the sites of solute-solvent interaction, and the larger spacial distance causes a weaker solute-sovent interaction. Intramolecular hydrogen bonding also causes the carbonyl group to be relatively less basic which decreases the strength of an intermolecular hydrogen bond formed between the solute and the acidic proton of the solvent. Therefore, there is a smaller nu C=O ... HO frequency decrease compared to nu C=O for similar compounds not intramolecularly hydrogen bonded in going from solution in CCl4, to solution in CHCl3, or (CH3)(2)SO.

引用

页码：93 / 102

页数：10

共 27 条

[1]

Gutmann V, 1978, DONOR ACCEPTOR INTER, P29

[2] FACTORS AFFECTING INFRARED GROUP FREQUENCIES - CARBONYL STRETCHING ABSORPTION-BANDS [J].