Synthesis and characterization of new coordination polymers generated from oxadiazole-containing ligand and inorganic M(II) [M = Cu(II), Co(II)] salts was written by Dong, Yu-Bin;Ma, Jian-Ping;Huang, Ru-Qi;Liang, Fang-Zhen;Smith, Mark D.. And the article was included in Dalton Transactions in 2003.Safety of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole This article mentions the following:
The coordination chem. of the oxadiazole-containing ligand 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (L5) with inorganic Cu(II) and Co(II) salts was studied. Three new coordination polymers (1–3) and one H-bonded polymer (4), [Cu(L5)2(H2O)3(ClO4)](ClO4).H2O, were prepared by solution reactions. [Cu(L5)(H2O)(SO4)]·2(H2O) (1) adopts a novel chiral three-dimensional motif with rhombus channels (∼6.04 × 14.09 Å). [Co(L5)(MeOH)2(SO4)](MeOH)(H2O)3.5 (2) features a novel two-dimensional network. [Cu(L5)2(H2O)2](L5)2(ClO4)2(MeOH)(H2O) (3) features a two-dimensional rhombus-grid-type layer with inner grid cavity dimensions of 13.22 × 13.22 Å2. Compound 4, however, is a mol. complex that is bound together by strong N···H-O and O···H-O H bonds into a three-dimensional H-bonded network. 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. 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. 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