EPR and 1H NMR spectroscopic study of the CrIII(salen)Cl catalysts

An EPR and 1H, 2H NMR study of the CrIII(salen)Cl type complexes was performed for the first time; the X-band EPR spectra of the S = 3/2 CrIII(salen)Cl complexes were interpreted using analytical expressions to reveal the g-factors and fine structure parameters, and assignment of the 1H and 2H NMR resonances was made.