The spectra of ferric haems and haemoproteins.- The absolute configuration of transition metal complexes.- The application of nuclear quadrupole resonance spectroscopy to the study of transition metal compounds.- Kationenverteilung zweiwertiger 3d n -ionen in oxidischen spinell-, granat- und anderen strukturen.

Valence-shell expansion studied by radio-frequency spectroscopy.- Ligand-field spectroscopy and chemical bonding in Cr3+-containing oxidic solids.- Spectra of 3d five-coordinate complexes.- Valence-shell expansion studied by ultra-violet spectroscopy.- Polynuclear complexes of iron and their biological implications.- Ionic radii and enthalpies of hydration of ions.