EXTENDED HÜCKEL MOLECULAR ORBITAL CALCULATION OF THE TEMPERATURE DEPENDENCE OF THE QUADRUPOLE SPLITTING OF [Fe(H2O)6] SiF6 AND KFeCl3 K. M. HASSELBACHJ. Phys. Colloques, 37 C6 (1976) C6-457DOI: https://doi.org/10.1051/jphyscol:1976689
