ammonium hydroxide in ethanol byproducts: ammonium chloride; to the quinoline (85.17 mmol) in ethanol was added an ethanolic soln. of GaCl3 (28.39 mmol) dropwise; stirring at room temp. under N2 for 24 h;an excess of ammonium hydroxide was added dropwise; stirring for 1 h; the ppt. was vac. filtered and washed with water and ethanol; the product was dried under vac. and purified by vac. train sublimation;

ammonium acetate in water Ga salt was mixed with the aq. solution of the ligand buffered with ammonium acetate in a 1:3 molar ratio; recrystn. from MeOH; differential scanning calorimetry, thermal gravimetric anal.;

NH4OH in acetic acid aq. acetic acid; ligand dissolved in 10percent acetic acid; Ga salt was slowly added at room temp.; soln. stirred and heated at 80°C under reflux; concd. NH4OH was added until pH 7.0 was reached; suspn. refluxed during one more h; ppt. filtered off; washed (hot water); dried at 100°C;