| | 1 | Author
| A. Pajzderska, J. Wąsicki, S. Lewicki | Requires cookie* | | | Title
| Molecular Motion in Tetraphenyltin Studied by NMR  | | | | Abstract
| NMR second moment and spin-lattice relaxation times in the laboratory (60 and 25 MHz) and in the rotating frame (B { = 2.1 mT) were studied for polycrystalline tetraphenyltin Sn(C 6 H 5) 4 in a wide tem-perature range. Two kinds of motions were detected: isotropic rotation of whole molecules and reorien-tations/oscillations of phenyl rings. A dependence of the potential energy of the molecule in the crystal on the angle of the phenyl ring rotation about the Sn-C bond was obtained on the basis of atom-atom calculations. The amplitude of the ring-oscillations at 133 K was estimated as ± 7°. Below room tem-perature the magnetisation recovery is significantly non-exponential, which may be interpreted as due to the correlated motion of phenyl rings. | | | |
Reference
| Z. Naturforsch. 54a, 488—494 (1999); received June 7 1999 | | | |
Published
| 1999 | | | |
Keywords
| NMR, Relaxation, Potential Energy | | | |
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| default:Reihe_A/54/ZNA-1999-54a-0488.pdf | | | | Identifier
| ZNA-1999-54a-0488 | | | | Volume
| 54 | |
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