Christy Rani Grace, R. ; Anil Kumar, (1992) Flip-angle dependence of nonequilibrium states yielding information on connectivity of transitions and energy levels of oriented molecules. A modified Z-COSY experiment Journal of Magnetic Resonance, 99 (1). pp. 81-98. ISSN 0022-2364
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0022-2364(92)90157-3
Abstract
Nonlinear measurement of the nonequilibrium state of the spin system of oriented acetone by different flip angles of the measuring pulse leads to dramatically different intensities. While such spectra contain information on the connectivity of transitions, it is shown that the low-flip-angle experiment, in the linear regime, yields information on direct connectivities. It is shown that a totality of information on the direct connectivity is obtained by a two-dimensional experiment, namely 90°-t1-αφ-τδ-βψ-t2. A systematic analysis of this connectivity information leads to a complete reconstruction of the energy-level system of the various symmetry domains of oriented acetone, a six-spin system characterized by C3v Θ C3v symmetry. A computer program has been written to reconstruct the energy-level system from the connectivity information. This leads to, in favorable cases, complete information on the parameters of the spin Hamiltonian.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
ID Code: | 72654 |
Deposited On: | 29 Nov 2011 03:56 |
Last Modified: | 29 Nov 2011 03:56 |
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