The Study of the Magnetic Properties of a Fe(III) Complex Solution by the NMR Method of “Stationary Coaxial Ampoule”

Abstract

For the first time, the nuclear magnetic resonance method of “stationary coaxial ampoule” was used to study the temperature dependence of the paramagnetic contribution of iron-containing complex molecules to the volume magnetic susceptibility of a solution of this complex. It was found that when the complex [Fe(salten)Cl] is dissolved in the chloroform/toluene mixture (1:1), this dependence obeys the Curie–Weiss law. On the basis of the obtained dependence the value of the effective spin of the Fe(III) ion was calculated with high accuracy. The obtained value of S_eff for the Fe(III) ion agrees with the value found in the EPR study of the vitrified solution of this complex.