Received 9 September 2013
aDepartment of Chemistry, Faculty of Science, Fukuoka University, Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan,bDepartment of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, and cDepartment of Chemistry, Graduate School of Science and Technology, Kumamoto University, Kurokami, Kumamoto 860-8555, Japan
Correspondence e-mail: firstname.lastname@example.org
The title dinuclear complex, [Fe2Br4(C13H9N4)2], which lies on an inversion center, features two approximately planar bis(pyridin-2-yl)pyrazole (bpypz-) ligands [maximum deviation = 0.082 (3) Å] and four bromide ions. Each FeIII ion is octahedrally coordinated by four N atoms of two bpypz- ligands and two Br ions. - stacking interactions [centroid-centroid distances = 3.7004 (17)-4.0123 (18) Å] are observed between pyridyl and pyrazole rings, and between pyridyl and pyridyl rings of adjacent complex molecules.
For metal complexes of 3,5-bis(pyridin-2-yl)pyrazole, see: Yoneda, Adachi, Hayami et al. (2006); Yoneda, Adachi, Nishio et al. (2006); Ishikawa et al. (2010); Mishima et al. (2011); Washizaki et al. (2012).
Data collection: CrystalClear (Rigaku, 2008); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalStructure (Rigaku, 2010); software used to prepare material for publication: CrystalStructure.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IS5304 ).
This work was supported by the fund Grant-in-Aids for Science Research (No. 25410078) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Ishikawa, R., Nakano, M., Fuyuhiro, A., Takeuchi, T., Kimura, S., Kashiwagi, T., Hagiwara, M., Kindo, K., Kaizaki, S. & Kawata, S. (2010). Chem. Eur. J. 16, 11139-11144.
Mishima, A., Fuyuhiro, A., Kumagai, H. & Kawata, S. (2011). Acta Cryst. E67, m1523-m1524.
Rigaku (1998). REQAB. Rigaku Corporation, Tokyo, Japan.
Rigaku (2008). CrystalClear. Rigaku Corporation, Tokyo, Japan.
Rigaku (2010). CrystalStructure. Rigaku Corporation, Tokyo, Japan.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Washizaki, T., Ishikawa, R., Yoneda, K., Kitagawa, S., Kaizaki, S., Fuyuhiro, A. & Kawata, S. (2012). RSC Adv. 2, 12169-12172.
Yoneda, K., Adachi, K., Hayami, S., Maeda, Y., Katada, M., Fuyuhiro, A., Kawata, S. & Kaizaki, S. (2006). Chem. Commun. pp. 45-47.
Yoneda, K., Adachi, K., Nishio, K., Yamasaki, M., Fuyuhiro, A., Kaizaki, S. & Kawata, S. (2006). Angew. Chem. Int. Ed. 45, 5459-5461.