^1H NMR Studies of Some Imidazole Ligands Coordinated to Co(III)

Authors

KOSROW ZAMANI
AKBAR MOBINIKHALEDI
NASER FOROUGHIFAR
KHALIL FAGHIHI
VAHID MAHDAVI

Abstract

Chemical shifts for proton signals of an imidazole ring coordinated to Co(III) move downfield as the total complex charge increases. However, the C_{(2) - H} chemical shift of the imidazole ring in cis-[Co(en)_{2}(N-mIm) OPO_{3}H]°, which has no charge compared to those of cis-[Co(en)_{2}(N-mIm) OPO_{3}H]^{+} and cis}-[Co(en)_{2}(N-mIm) OPO_{3}H_{2}]^{2 +} , moves downfield. These unexpected phenomena could be attributed to an intramolecular interaction between the phosphate anion group and C_{(2) - H} of the imidazole ligand.

DOI

-

First Page

71

Last Page

76

Recommended Citation

ZAMANI, K, MOBINIKHALEDI, A, FOROUGHIFAR, N, FAGHIHI, K, & MAHDAVI, V (2003). ^1H NMR Studies of Some Imidazole Ligands Coordinated to Co(III). Turkish Journal of Chemistry 27 (1): 71-76. https://doi.org/-