A zinc hydroxide complex of relevance to 5-aminolevulinate dehydratase: The synthesis, structure and reactivity of the tris(2-mercapto-1-phenylimidazolyl)hydroborato complex [TmPh]ZnOH

Abstract The tris (2-mercapto-1-phenylimidazolyl)hydroborato ligand, [Tm Ph ], has been used to prepare [Tm Ph ]ZnOH, the first structurally characterized terminal zinc hydroxide complex of a tridentate sulfur donor ligand; as such, [Tm Ph ]ZnOH represents a good structural model for the zinc enzyme 5-aminolevulinate dehydratase (ALAD).