ISSN:
0749-1581
Keywords:
Methyl fluorene-3-carboxylate
;
1H and 13C NMR assignments
;
13C spin-lattice relaxation
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
13C nuclear magnetic relaxation rates were measured as a function of temperature for methyl fluorene-3-carboxylate and used to describe the dynamics of this molecule. The easiest reorientation is about the x principal diffusion axis, which is situated close to that inertial principal axis corresponding to the smallest moment of inertia. The reorientation of this planar asymmetric rotor is found to be anisotropic about the in-plane x and y axes, as expected from unequal moments of inertia. The reorientation about the out-of-plane axis z is faster at the lowest temperature measured and it becomes comparable to the in-plane motion at the remaining temperatures, showing decreased frictional forces for rotation in the molecular plane. Total assignment of the 1H and 13C NMR spectra of the fluorene derivative was achieved by employing 1D and 2D NMR techniques.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260291205
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