Diorganogallium Complexes Containing Tripodal Schiff Bases: Synthesis and Structure of [N{Me₂GaO(C₆H₄)CH=N–CH₂–CH₂-}₃]

Abstract

Treatment of triorganogallium etherates with tripodal Schiff bases in benzene gave complexes of composition [N{R 2 GaO(C 6 H 3 X)CH=N-CH 2 -CH 2 -} 3 ] (R = Me, Et; X = H, OMe) in nearly quantitative yield. The molecular structure of [N{Me 2 GaO(C 6 H 4 )CH=N-CH 2 -CH 2-} 3 ] revealed that there are two different types of molecules in the crystal lattice each containing three distorted tetrahedral gallium atoms.

Synthesis, Characterization, Photoluminescence, and Computational Studies of Monoorgano-Gallium and -Indium Complexes Containing Dianionic Tridentate ONE (E = O or S) Schiff Bases

“…The chemistry of organo-gallium/-indium complexes derived from an internally functionalized anionic oxo-ligand has been an active area of extensive current research due to several obvious reasons . These complexes exhibit rich structural diversity − and show interesting photophysical − and antitumor properties. They find applications in catalysis , and as single-source molecular precursors for deposition of metal oxide thin films …”

“…Both anionic (e.g., N -phenylsalicylidineimine) and dianionic ligands (such as Salen) have been employed for the synthesis of complexes of group 13 metals. Organo-gallium and -indium complexes containing these ligands have been isolated in the form of monomers, dimers, and trimers. ,,,, …”

Diorgano-Gallium and -Indium Complexes Derived from Benzoazole Ligands: Synthesis, Characterization, Photoluminescence, and Computational Studies

“…The chemistry of organo-gallium and -indium complexes has witnessed a rapid development during the last two decades or so . The sustained interest in these complexes stems from several reasons including their rich structural diversity − and polymorphism, their interesting photophysical − and antitumor properties, and their relevance in catalysis and materials science as molecular precursors. , Compounds of composition R 2 ML (R = alkyl, M = Ga or In; L = anionic ligands), with the metal coordination number varying between three and six, have been isolated as mono- (e.g., [Bu t 2 Ga(OCPh 3 )]), di- [e.g., [Bu t 2 Ga(μ-OR)] 2 (R = Me, Et, Pr i )], and trimeric (e.g., [Me 2 Ga(μ-OMe)] 3 ) species. Structural preferences in these complexes are influenced by the nature of R, M, and L, with indium tending to acquire higher coordination number …”