Synthesis and characterization of dialkylgallium (dialkylindium) complexes of N-salicylidene 2-aminopyridine and N-salicylidene 2-methoxyaniline: crystal structure of dimethyl[N-salicylidene 2-aminopyridine]gallium

Reaction of trimethylgallium (trimethylindium) and triethylgallium (triethylindium) with N-salicylidene 2-aminopyridine or N-salicylidene 2-methoxyaniline in benzene solution yields seven intramolecular coordinated Group 13 metal Schiff-base complexes. All complexes obtained were characterized by elemental analysis, 1H-NMR, IR and mass spectrometry. The structure of dimethyl[N-salicylidene 2-aminopyridine]gallium (1) was determined by X-ray single crystal analysis. The Ga atom is four coordinate in the structure. Photoluminescent emission spectra of complexes dimethyl[N-salicylidene 2-aminopyridine]gallium (1), diethyl[N-salicylidene 2-aminopyridine]gallium (3), diethyl[N-salicylidene 2-aminopyridine]indium (4) and dimethyl[N-salicylidene 2-methoxylaniline]gallium (5) were measured. The maximum emission wavelength is between 503 and 511 nm, respectively on radiation by UV light.