Received 14 February 2011
The title ZnII complex, [Zn(C9H9O2)2(C6H6N2O)2], contains two 4-ethylbenzoate and two nicotinamide monodentate ligands, leading to a distorted tetrahedral coordination of the ZnII ion. The dihedral angles between the carboxylate groups and the adjacent benzene rings are 10.33 (13) and 2.38 (11)°, while opposite pyridine and benzene rings are oriented at dihedral angles of 68.46 (5) and 81.09 (6)°. In the crystal, intermolecular N-HO hydrogen bonds link the molecules, forming a three-dimensional network. C-HO interactions also occur as well as two weak C-H interactions involving the benzene rings.
For niacin, see: Krishnamachari (1974). For the nicotinic acid derivative N,N-diethylnicotinamide, see: Bigoli et al. (1972). For related structures, see: Hökelek et al. (1996, 2009a,b); Hökelek & Necefoglu (1998, 2007). For standard bond lengths, see: Allen et al. (1987).
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2256 ).
The authors are indebted to Anadolu University and the Medicinal Plants and Medicine Research Centre of Anadolu University, Eskisehir, Turkey, for the use of X-ray diffractometer. This work was supported financially by the Scientific and Technological Research Council of Turkey (grant No. 108 T657).
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1-19.
Bigoli, F., Braibanti, A., Pellinghelli, M. A. & Tiripicchio, A. (1972). Acta Cryst. B28, 962-966.
Bruker (2001). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2007). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837-838.
Hökelek, T., Dal, H., Tercan, B., Özbek, F. E. & Necefoglu, H. (2009a). Acta Cryst. E65, m466-m467.
Hökelek, T., Dal, H., Tercan, B., Özbek, F. E. & Necefoglu, H. (2009b). Acta Cryst. E65, m607-m608.
Hökelek, T., Gündüz, H. & Necefoglu, H. (1996). Acta Cryst. C52, 2470-2473.
Hökelek, T. & Necefoglu, H. (1998). Acta Cryst. C54, 1242-1244.
Hökelek, T. & Necefoglu, H. (2007). Acta Cryst. E63, m821-m823.
Krishnamachari, K. A. V. R. (1974). Am. J. Clin. Nutr. 27, 108-111.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.