ONO pincer type ligand complexes of Al(III) as efficient catalyst for chemical fixation of CO2 to epoxides at atmospheric pressure

•Hydrazone-based ONO pincer mono-nuclear Al complexes were synthesized and characterized.•These ONO-pincer Al-complexes are excellent catalyst for the fixation of CO2.•The coupling was catalyzed at atmospheric pressure with the highest conversion.•For the mechanistic investigation intermediate species were detected.