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- W2045180847 abstract "The linewidths and chemical shifts of the 59Co NMR spectra of [Co(en)3]3+, cis-[Co(en)2(N3)2]+, and trans-[Co(en)2(N3)2]+ were measured at 5.87 T in water, methanol, propanediol-1,2-carbonate, dimethyl sulfoxide, N,N-dimethylacetamide, and hexamethylphosphoramide. The changes in linewidths in different solvents are attributed to ion-solvent interaction. Excellent correlations were established between the square root of the viscosity-normalized linewidths and their respective cobalt chemical shifts. It was also established that the cobalt chemical shifts and linewidths were sensitive to the electronic structure of the oxygen in the solvents. It is suggested that the origin of the electric-field gradient at cobalt arises from the distortion of the electronic structure through donor and acceptor interaction with solvent molecules. In other words, the Deverell electronic distortion model is favored over the electrostatic model. This conclusion is supported by good correlations of the cobalt-59 chemical shifts with the acceptor number of the solvents." @default.
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- W2045180847 date "1994-06-01" @default.
- W2045180847 modified "2023-09-27" @default.
- W2045180847 title "Solvent-Dependent 59Co NMR-Study of [Co(en)3]Cl3 and cis,trans-[Co-(en)2(N3)2]NO3" @default.
- W2045180847 doi "https://doi.org/10.1006/jmra.1994.1110" @default.
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