✦ LIBER ✦
Variable temperature multinuclear NMR. Investigation of dimethylformamide exchange on the octakis (N,N-dimethylformamide)-thulium(III) ion
✍ Scribed by Dino L. Pisaniello; André E. Merbach
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- German
- Weight
- 464 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The rate of DMF exchange on [Tm (DMF)~8~]^3+^ has been determined by ^1^H‐ and ^13^C‐NMR. linebroadening techniques. ^1^H‐NMR. yields the following solvent exchange parameters; Δ__H__* = 33.2 (±0.5) kJ mol^−1^, Δ__S__* = 9.9 (±2.4) J K^−1^ mol^−1^and k (200 K) = 2.94 (±0.09)× 10^4^ s^−1^, whilst results from ^13^C‐NMR. are similar. No evidence, by ^35^C1‐NMR., was found of contact ion‐pair formation when the perchlorate salts were used.