30862-67-0Relevant academic research and scientific papers
Ligand Field Transitions and the Origin of Zero Field Splitting in and (R=2,3,5,6-Me4C6H): A Model for High-Spin Fe(III) Site in Rubredoxin
Deaton, Joseph C.,Gebhard, Matthew S.,Koch, Stephen A.,Millar, Michelle,Solomon, Edward I.
, p. 6241 - 6243 (1988)
We report the assignment of LF (ligand field) transitions, for a Rb model complex (Fe(SR)- R=2,3,5,6-Me4C6H), with single crystal polarized absorption and magnetic circular dichroism (MCD).We also experimentally test Griffith's ZFS (zero field splitting) model.
1H-NMR- AND MOESSBAUER INVESTIGATIONS ON THE ION PAIRS OF TETRACHLOROFERRATE(III) ANION WITH QUATERNARY PHOSPHONIUM CATIONS
Vincze, L.,Papp, S.
, p. 153 - 162 (2007/10/02)
Paramagnetic ion pairs were investigated by 1H-NMR and Moessbauer spectroscopy in chloroform and dimethyl sulphoxide.It has been shown that the chemical shifts of 1H-NMR peaks arise from a combination of contact and pseudocontact interactions of opposite sign, and the ratio of interactions was definitely influenced by the extent of solvation.On the basis of Moessbauer measurements it was shown that the change of the cation size had an effect on the electron delocalization and symmetry conditions of iron(III) in solid samples, too.In concentrated frozen solutions of ion pairs, different interactions were indicated by Moessbauer spectros copy in chloroform and dimethyl sulphoxide, in accordance with 1H-NMR results.However, in dilute solution such an anion-solvent interaction was observed directly, which could be shown by the NMR method only indirectly.
