The intramolecular OH bond length of water in a concentrated poly(ethyleneoxide) solution. An NMR relaxation study
✍ Scribed by T.W.N. Bieze; J.R.C. van der Maarel; J.C. Leyte
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 655 KB
- Volume
- 216
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The proton relaxation rates of normal as well as "O-enriched water and the deuterium relaxation rate in *H-enriched water were measured in 10 monomolal poly(ethyleneoxide) solutions. The "0-'H 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.