Crystal structures of bis{4-bromo-2-[(2-hydroxyethylimino)methyl]phenolato}copper and bis{4-chloro2-[(2-hydroxyethylimino)methyl]phenolato}copper

The crystal structures of his {4-bromo-2- [(2-hydroxyethylimino)methyl]phenolato} copper (I) and bis{4-chloro-2-[(2-hydroxyethylimino)methyl]phenolato} copper (II) are determined. Crystals I are monoclinic, space group P2(1)/c, Z = 2, and R = 0.0732 (for all reflections). Crystals II are likewise monoclinic, space group P2(1)/n, Z = 2, and R = 0.1106. In the structures of compounds I and II, the metal atom is situated at the center of symmetry and coordinated by two singly deprotonated bidentate 4-bromo- or 4-chloro-2-[(2-hydroxyethylimino)methylphenol molecules, respectively, through phenol oxygen and azomethine nitrogen atoms, which form a distorted planar square. In the structures of compound II, the coordination polyhedron of the central atom is completed to an elongated tetragonal bipyramid by the amino alcohol oxygen atoms of the adjacent complexes.