ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Rotation barriers around the metal - pyridine bond of various macrocyclic complexes of cobalt(III), rhodium(III), zinc(II) and magnesium(II) have been studied using the 13C longitudinal relaxation times, T1, of the carbon atoms of pyridine and the macrocycle. The data have been rationalized on the basis of steric and electronic factors. The influence of π back-donation on the rates of rotation around the axial Co—N and Rh—N bonds is discussed. The agreement found between the conclusions drawn from this study and X-ray data reported for complexes of identical or closely related structure demonstrates the validity of this method.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270150407