A new 2D HgII coordination polymer containing novel coordination mode of 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (bpo) ligand, [Hg(μ-bpo)2(N3)2]n: Spectroscopic, thermal, fluorescence and structural studies was written by Atoub, Najmeh;Mahmoudi, Ghodrat;Morsali, Ali. And the article was included in Inorganic Chemistry Communications in 2007.Reference of 15420-02-7 This article mentions the following:
A new two-dimensional HgII coordination polymer containing 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (bpo) and azide anions, [Hg(μ-bpo)2(N3)2]n, was synthesized and characterized by elemental anal., IR-, 1H NMR-, 13C NMR spectroscopy and structurally determined by x-ray single-crystal diffraction. The thermal stability of [Hg(μ-bpo)2(N3)2]n was studied by thermal gravimetric (TG) and differential thermal analyses (DTA). The single-crystal x-ray data shows that ligand bpo is bridged via one pyridyl N and one oxadiazole N atom, as a novel coordination mode of the ligand bpo. Also, the ligand and complex are luminescent in the solid state, with emission maxima in the visible light region (λmax = 470 nm for both bpo and [Hg(μ-bpo)2(N3)2]n). In the experiment, the researchers used many compounds, for example, 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7Reference of 15420-02-7).
2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.Reference of 15420-02-7