Synthesis and characterization of organoindium complexes derived from internally functionalized anionic ligands

Abstract

Reactions of triorganoindium etherate with protic ligands in benzene at room temperature have afforded diorganoindium complexes of the type, [R₂In(L)]_n [R = Me, Et; L = (C₅H₄N)CH₂O^-, (C₅H₄N)CH₂O^-,  2-MeOC₆H₄O^-; C₆H₅CO₂^-, 2-MeOC₆H₄CO₂^-; 2- (C₅H₄N)CO₂^-; 2-(C₉H₆N)CO₂^-; 2-(C₄H₃O)- CO₂^-] These complexes have been characterized by indium analysis, IR, NMR (¹H,¹³C{¹H}) and mass spectral data. The mass spectra reveal that these complexes are associated in the solid state. The complex Et₂In (O₂C-C₉H₆N) shows photoluminescence on excitation with 370 nm radiation.