Correlation of 13C, 15N and 59Co nuclear magnetic resonance chemical shifts with ligand-field parameters for pentacyanocobaltate(III) complexes

Abstract

The ¹³C, ¹⁵N and ⁵⁹Co NMR spectra of 15 pentacyanocobaltate(III) complexes revealed a common tendency for the chemical shift to vary with the identity of the sixth co-ordinated ligand. These chemical shifts were found to correlate with ligand-field parameters, including the nephelauxetic ratio, among them the reduction parameter having a significant effect.