Effects of inert cosolvents on hydrogen bonding between nitroxide radicals and proton donors
β Scribed by Imad Al-Bala'a; Richard D Bates Jr.
- Publisher
- Elsevier Science
- Year
- 1991
- Weight
- 454 KB
- Volume
- 93
- Category
- Article
- ISSN
- 0022-2364
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π SIMILAR VOLUMES
Pulsed and cw NMR methods have bezn used to investigate the 'H relkation of proton donor molecules hp drogen bonded with the DTBN radial. Frequency dependences of proton relaxation times Tr and T2 were studied with a DTBN solution of CHC.13 by the pulsed NMR method. It is shown that the relaxation m
2%~ diffcrcncc in chemicnt shift between hydrogen bonded protons and deutcrons has been cxzmincd bodr tlworetitally nnd cxpcrimcntaliy. it is shown that valuable information about the hydrogen bond poteM can bc cxtmcted from this isotope effect on chcmicd rhifts.
Receveld 7 July 19e0, m fiial form 6 August 1980 Compounds wth mtramolecular hydrogen bonds are mvestlgated. When the hydrogen-bond donor and acceptor groups are not electromcally conjugated, IR contmua mdlcate a large proton polanzabibty. When they are ConJugated the contmua are very weak. Thus not