Yoo, Jina Anion variation on a cobalt(III) complex of salen-type ligand tethered by four quaternary ammonium salts for CO2/epoxide copolymerization. [electronic resource] - Dalton transactions (Cambridge, England : 2003) Mar 2010 - 2622-30 p. digital Publication Type: Journal Article ISSN: 1477-9234 Standard No.: 10.1039/b920992a doi