ESR spectra of chromium(V) complex under saturation conditions at low temperatures

As a consequence of the spectroscopic studies of the electron spin subsystem for the EHBACr/sup V/, EHBA(D)Cr/sup V/ and HMBACr/sup V/ complexes, the parameters of ESR spectra have been determined. The differences in a behavior of ESR line width depending on the microwave power have been revealed. The observable effects of the widening and narrowing of ESR lines for EHBACr/sup V/ and HMBACr/sup V/ complexes under microwave saturation conditions have been validated by the theoretical model based on averaging of a resonance magnetic field of molecules in all directions given that the molecules are oriented chaotically. It has been shown that one of the reasons in the visible difference of the behavior of ESR line width for the substances noted above is the different conformation of their molecules.