| Autor: |
Dixon, A. M., Larive, C. K., Nantsis, E. A., Carper, W. R. |
| Zdroj: |
The Journal of Physical Chemistry - Part A; December 24, 1998, Vol. 102 Issue: 52 p10573-10578, 6p |
| Abstrakt: |
The relaxation rate ratio method (RRR) has been used to calculate molecular correlation times, τc, from the 13C and 113Cd relaxation rates of cadmium−cyclohexanediamine tetraacetate (CyDTA). The ratio of spin−spin (R2) relaxation rates to spin−lattice (R1) relaxation rates (R2/R1) is used to determine the relative motion of specific nuclei within the Cd−CyDTA complex. Formation of the Cd−CyDTA complex results in an increase in the measured NMR rotational correlation times compared with the values obtained for the CyDTA ligand alone. 13C chemical shifts, evidence of 113Cd−14N coupling and NMR rotational correlation times provide information concerning the geometry of the Cd−CyDTA complex. The NMR experimental results correlate with anhydrous, hydrated, and hydroxylated ab initio structures of the Cd−CyDTA complex. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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