COMBINATION VIBRATION OF NEIGHBORING MOLECULES IN LIQUID HOD (IN D2O)

被引：24

作者：

SCHIOBERG, D

BUANAMOM, C

LUCK, WAP

机构：

[1] Fachbereich Physikalische Chemie, Universitat Marburg, Auf den Lahnbergen, D-3550, MARBURG

来源：

SPECTROSCOPY LETTERS | 1979年 / 12卷 / 01期

关键词：

Ho of H-bond formation; HOD spectra at different temperatures vOH + vOD of neighbouring molecules Δ;

D O I：

10.1080/00387017908063482

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Combination vibrations of neighbouring H-bonded molecules show a characteristic absorption band. This band appears in the spectra if H-bonds are formed and vanishes when the H-bonds are broken. Different observations allow the conclusion that the combination vOH + vOD in spectra of liquid HOD (in D20) may be assigned to a combination vibration (vOH + vOD)2mol of two neighbouring molecules (HOD and D2O). The intensity of this (vOH + vOD)2mol band was investigated at different temperatures. It results an estimation of the van't Hoff enthalpy change of H-bond formation in liquid water ΔH°(OH.O) = -15.4 t 1.0 kJ/mole (= -3.7 ± 0.2 kcal/mole). © 1979, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：83 / 93

页数：11

共 17 条

[1] DOUBLE EXCITATION IN INFRARED SPECTRA OF SELF-ASSOCIATED ALCOHOLS [J].