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Updated: Jun 1, 2026

Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase
Published on: March 19, 2020
Diaqua-bis(2-bromo-benzoato-κO)bis-(nicotinamide-κN)zinc(II)
Abstract:
The title Zn(II) complex, [Zn(C(7)H(4)BrO(2))(2)(C(6)H(6)N(2)O)(2)(H(2)O)(2)], is centrosymmetric with the Zn atom on an inversion center. The mol-ecule contains two 2-bromo-benzoate (BB) and two nicotinamide (NA) ligands and two coordinated water mol-ecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Zn atom form a slightly distorted square-planar arrangement, while the slightly distorted octa-hedral coordination is completed by the two N atoms of the NA ligands in the axial positions. The dihedral angle between the carboxyl group and the adjacent benzene ring is 31.14 (12)°, while the pyridine and benzene rings are oriented at a dihedral angle of 83.54 (5)°. In the crystal structure, O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into infinite chains. A weak C-H⋯π inter-action is also present.
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Coordination Compounds and Nomenclature
meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H

