Luminescence of antimony(III) halogenides complexes with 2- and 4-benzylpyridine

Abstract

Antimony(III) halogenides complexes with 2- and 4-benzylpyridines of compositions (2-С₁₂Н₁₁NН)₂SbBr₅, (2-С₁₂Н₁₁NН)₂SbBr₅, (2-С₁₂Н₁₁NН)₃SbI₆, and (4-С₁₂Н₁₁NН)₃SbI₆ 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 ³Р₁-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).