Abstract
The efficiency of Mn(IV) luminescence in fluorine coordination is discussed in the context of the chemical bonding in the 
center. It is possible that the lower degree of σ‐antibonding in the 
orbitals, and the greater degree of π‐antibonding in the 
orbitals, compared with the effect observed in oxides, contributes to a high efficiency and quenching temperature of the emission. The excitation and emission spectra of Mn(IV) in 
, 
, and 
are presented and compared.