THE INTRAMOLECULAR OH BOND-LENGTH OF WATER IN A CONCENTRATED POLY(ETHYLENEOXIDE) SOLUTION - AN NMR RELAXATION STUDY

被引：21

作者：

BIEZE, TWN

VANDERMAAREL, JRC

LEYTE, JC

机构：

[1] Department of Physical and Macromolecular Chemistry, Gorlaeus Laboratories, Leiden University, 2300 RA Leiden

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 216卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(93)E1245-C

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The proton relaxation rates of normal as well as O-17-enriched water and the deuterium relaxation rate in H-2-enriched water were measured in 10 monomolal poly(ethyleneoxide) solutions. The O-17-H-1 intramolecular dipolar contribution to the proton relaxation rate was determined. From these experimental parameters the intramolecular OH-bond distance in the water molecule was calculated. It was found that this distance is increased by a small (1%) but significant amount compared to the pure water value. The results indicate that the solvent shows increased hydrogen bonding at the hydrophilic as well as the hydrophobic interface.

引用

页码：56 / 62

页数：7

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