Synthesis and crystal structure of [CuL0.5(Ac)2]n·0.5nCHCl3 (L = 2,5-bis(4-pyridyl)-1,3,4-oxadiazole) was written by Liu, He;Zhong, Bo-Hua;Liu, Li-Ping;Han, Shi-Tian. And the article was included in Journal of Chemical Crystallography in 2004.Safety of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole This article mentions the following:
A 1-dimensional complex [CuL0.5(Ac)2]n·0.5nCHCl3 (L = 2,5-bis(4-pyridyl)-1,3,4-oxadiazole) was synthesized and structurally characterized by x-ray diffraction: Monoclinic, space group C2/c with a 27.217(3), b 13.0383(11), c 8.5671(9) Å, β 103.215(3)°, Z = 8. The crystal structure of the complex reveals that the familiar lantern-type structure that is characteristic of dimetal tetracarboxylates of CuII ions, and the binuclear units were bridged by the angular ligands to form a 1-dimensional zigzag chain coordination polymer. Every metal center is present in a distorted square-pyramidal coordination environment, consisting of coordination with one N atom of the ligand in the axial position and four O atoms of CH3COO– anions in equatorial positions. The CuII···CuII distance is 2.6060(9) Å. The title complex resides in the formation of a 3-dimensional network through π-π stacking interactions. In the experiment, the researchers used many compounds, for example, 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7Safety of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole).
2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Safety of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole