Jack T. Veal

THE STRUCTURAL AND MAGNETIC CHARACTERIZATION OF THE BINUCLEAR CHROMIUM COMPLEX DI-μ-HYDROXOTETRAGLYCINATODICHROMIUM(III)

Abstract The binuclear complex [Cr(gly)2OH]2, where gly=NH4C2O2 −, has been the subject of much interest since its initial report by Ley and Ficken3 in 1912. Earnshaw and Lewis4 have reported the magnetic susceptibility variation for the complex in the temperature range 306–80°K, and although the maximum in susceptibility occurs below the lower limit of this range they were able to conclude from fitting procedures that an antiferromagnetic interaction existed and that the value of 2J (the singlet-triplet splitting) is -8cm−1.

The structural and magnetic characterization of μ-hydroxobis[pentaamminechromium(III)] chloride monohydrate, the acid rhodo complex

Abstract The structure of hydroxo-bridged μ-hydroxobis [pentaamminechromium(III)] chloride monohydrate has been redetermined and the CrO Cr angle found to be 166(1)° The temperature variation of the magnetic susceptibility may be explained in terms of an exchange hamiltonian with or without a biquadratic exchange term.