Luminescence of Antimony(III) Halogenides Complexes with 2-and 4-Benzylpyridine

Antimony(III) halogenides complexes with 2- and 4-benzylpyridines of compositions (2-C12NH)(2)SbBr5, (2-C12NH)(2)SbBr5, (2-C12NH)(3)SbI6, and (4-C12NH)(3)SbI6 are synthesized. Differences between the nature of luminescence of the complexes under study are revealed. The luminescence of antimony(III) chloride complexes agrees with the luminescence spectrum of the benzylpyridinium cation. The reduction of the energy of the luminescence P-3(1)-level of antimony(III) in bromide and iodide complexes ensures efficient transfer of the electron excitation energy from the resonance levels of an organic cation to antimony(III) levels and results in the emergence of characteristic luminescence of antimony(III).