Abstract
AbstractThe coordination behavior of chiral binucleating ligands of type 1–4 with various transition metals has been investigated. 1H‐NMR Titration experiments with zinc(II) salts gave detailed structural information about the structure of the resulting zinc complexes. Ligand 1 forms an unusual C3‐symmetric dinuclear zinc complex [Zn2CIL3] (8a) which was characterized by X‐ray crystallography. Treatment of complex 8a with various carboxylic acids resulted in ligand‐exchange reactions. With ligand 2, a hydroxo‐bridged dinuclear copper complex 15 was synthesized and its structure elucidated by X‐ray analysis. Solution studies UV and 1H‐NMR spectroscopy of the reaction of ligand 3 with ZnII and NII salts revealed the formation of dimeric species of the type [M2X4L2]. Ligand 4 formed well‐defined dinuclear complexes with NiII and CuII salts of which the corresponding NiII complex [Ni2(AcO)2(ClO4)2L] (22a) was characterized by crystal‐structure analysis.
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