An Unusual Determinant of Chirality. Unique Solution Chemistry and Novel NMR Spectroscopic Changes in Fluxional Re(V)=O Complexes with Rearranging meso N_2S_2 Ligands

摘要

Two conformers of a form axially ligated by OH~- cannot explain the two equal sets of pen NMR signals. However, two NH/NLp conformers differing only in NLp orientation and in rapid interchange via NLp inversion explain all the spectral results. Thus, the use of fast and slow time scale spectroscopies eliminates the ligation/deprotonation ambiguity in this case.