Research Article: Diaqua­bis(2-bromo­benzoato-κO)bis­(N,N-diethyl­nicotinamide-κN1)manganese(II)

Date Published: May 01, 2009

Publisher: International Union of Crystallography

Author(s): Tuncer Hökelek, Hakan Dal, Barış Tercan, F. Elif Özbek, Hacali Necefoğlu.


The title MnII complex, [Mn(C7H4BrO2)2(C10H14N2O)2(H2O)2], is centrosymmetric. The mol­ecule contains two 2-bromo­benzoate (BB) and two diethyl­nicotinamide (DENA) ligands and two water mol­ecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Mn atom form a slightly distorted square-planar arrangement, while the distorted octa­hedral coordination is completed by the two N atoms of the DENA ligands in the axial positions. The dihedral angle between the carboxyl group and the adjacent benzene ring is 79.95 (11)°, while the pyridine and benzene rings are oriented at a dihedral angle of 45.66 (6)°. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into infinite chains.

Partial Text

For general background, see: Antolini et al. (1982 ▶); Bigoli et al. (1972 ▶); Nadzhafov et al. (1981 ▶); Shnulin et al. (1981 ▶). For related structures, see: Hökelek et al. (1995 ▶, 1997 ▶, 2007 ▶, 2008 ▶); Hökelek & Necefoğlu (1996 ▶, 1997 ▶, 2007 ▶).




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