Investigations on the electron paramagnetic resonance parameters for Mn2+ in the ABF3 fluoroperovskites

► We study EPR parameters by including crystal-field and charge transfer mechanisms. ► Δg from charge transfer mechanism has opposite sign but close to crystal-field one. ► Charge transfer mechanism to A factor has same sign and 10% of crystal-field one. ► The usual idea of charge transfer mechanism negligible for D seems invalid for Δg ► The unpaired spin densities are calculated from the molecular orbital coefficients.