Crystal structure of dichloro[3-(pyridin-2-yl)-1H-pyrazol- 1-yl]propanamidezinc(II), ZnCl2(C11H12N4O)

Abstract

C 11 H 12 Cl 2 N 4 OZn, triclinic, P1 (no. 2), a =7.487(2) Å, b =8.604(2) Å, c =11.952(2) Å, a =69.13(3)°, b =80.47(3)°, Source of materialAs olution of the 3-[3-(pyridin-2-yl)-1H-pyrazol-1-yl]propanamide ligand (0.0432 g, 0.2 mmol) in acetonitrile (15 ml) was added dropwise to asolution of ZnCl 2 (0.0272 g, 0.2 mmol) in methanol (10 ml) in a50mlbeaker. The mixture was stirred for 30 min at 323 K, then filtered. The resulted solution was kept at room temperature. Colorless block-shaped single crystals suitable for X-ray diffraction were obtained after two weeks (yield 25 %based on Zn). Elemental analysis -found: C, 37.59 %; H, 3.21 %; Cl, 20.26 %; N, 15.97 %; Zn, 18.69 %; calculated for C 11H12Cl2N4OZn: C, 37.84 %; H, 3.43 %; Cl, 20.11 %; N, 15.89 %; Zn, 18.55 %. DiscussionIn recent years, 3-(2-pyridyl)pyrazole-based ligands have been found for awide range of application in coordination chemistry, because they can act as bridging or chelating ligands and exhibit a series of intriguing structures and potential applications as functional materials [1,2]. Nowadays, much attention has been focused on the synthetic approach and the structural control of coordination architectures [3,4]. The synthesis and crystallographic description of the 3-[3-(pyridin-2-yl)-1H-pyrazol-1-yl]propan-amide ligand were first put forward in our laboratory [5], but its coordination complexes with metals have not been yet reported.