89546-87-2Relevant articles and documents
TiCl4 mediated facile synthesis of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles
Zhang, Lin,Yu, Yu,Tang, Qiang,Yuan, Jianyong,Ran, Dongzhi,Tian, Binghua,Pan, Tao,Gan, Zongjie
, p. 423 - 431 (2019/12/27)
An efficient method for the synthesis of 2,5-disubstituted 1,3,4-oxadiazoles and 1,3,4-thiadiazoles has been developed. Various hydrazides or thionyl hydrazides readily react with DMA derivatives in the presence of TiCl4 as a catalyst to afford the desired products. This protocol provides a simple and economical procedure that affords the target products with good yields and wide substrate scope.
Trifluoromethanesulfonic acid-Ag(I) complex based on 3-(5-methyl-1,3,4-oxadiazole)pyridine and synthetic method thereof
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Paragraph 0023; 0024; 0025, (2018/03/01)
The invention discloses a trifluoromethanesulfonic acid-Ag(I) complex based on 3-(5-methyl-1,3,4-oxadiazole)pyridine and a synthetic method thereof. The trifluoromethanesulfonic acid-Ag(I) complex hasa general chemical formula of {[Ag3(L)4].3CF3SO3}, wherein L is 3-(5-methyl-1,3,4-oxadiazole)pyridine used as a ligand. The synthetic method comprises the following steps: weighing AgCF3SO3 and the ligand namely 3-(5-methyl-1,3,4-oxadiazole)pyridine according to a mol ratio as shown in the general chemical formula of {[Ag3(L)4].3CF3SO3}, carrying out uniform mixing, carrying out a reaction at 150to 180 DEG C, and carrying out natural cooling to a room temperature of 20 to 25 DEG C so as to obtain a white transparent crystal, i.e., the complex provided by the invention. The complex provided by the invention shows adsorption properties to a variety of dyes, and has application potential.
Syntheses, structural diversities and characterization of a series of coordination polymers with two isomeric oxadiazol-pyridine ligands
Ding, Bin,Wu, Jie,Wu, Xiang Xia,Huo, Jian Zhong,Zhu, Zhao Zhou,Liu, Yuan Yuan,Shi, Fang Xue
, p. 9704 - 9718 (2017/02/15)
In this work two positional-isomeric oxadiazol-pyridine ligands 3-(5-methyl-1,3,4-oxadiazol-2-yl)pyridine (L1) and 4-(5-methyl-1,3,4-oxadiazol-2-yl)pyridine (L2) have been designed and synthesized. A series of novel coordination polymers, namely [Cd2(μ2-L1)2(μ2-NCS)4]n (1), {[Cd(L1)(μ2-dca)2(H2O)]·H2O}n (2), {[Cu(μ2-L1)2(NCS)2]·0.5H2O}n (3), {[Ag2(μ2-L1)(μ3-L1)2]·2PF6}n (4), {[Ag3(μ2-L1)4(μ2-CF3SO3)(CF3SO3)]·CF3SO3} (5), {[Cd(L2)2(μ2-NCS)2]}n (6), [Ag(μ2-L2)(μ2-CF3SO3)]n (7) and {[Ag(μ2-L2)]·BF4}n (8) have been isolated. Both 1 and 2 are 2D CdII coordination polymers containing infinite {Cd-NCS-Cd} chains (for 1) or infinite {Cd-dca-Cd} layers (for 2), respectively. 3 is a 2D CuII coordination polymer, in which central metal ions are bridged via a bidentate bridging L1 ligand. While when different AgI salts were introduced into the reaction system, 1D AgI coordination polymers 4 and 5 with diverse coordination modes can be isolated. Furthermore, when the isomeric oxadiazol-pyridine L2 is used to replace L1 in the reaction system, 6-8 can be isolated. 6 is a 2D CdII coordination polymer containing {Cd-NCS-Cd} layers. 7 is a 2D neutral AgI coordination polymer while 8 is a 2D cationic AgI coordination polymer. Variable temperature magnetic susceptibility measurements (2-300 K) reveal anti-ferromagnetic interactions between central copper(ii) ions for 3. Solid-state luminescent properties of 1, 2 and 4-8 have been investigated indicating strong fluorescent emissions. Additionally, luminescent measurements illustrate that complex 8 exhibits highly sensitive luminescence sensing for Cr2O72? ions in aqueous solutions with high quenching efficiency Ksv = 2.08 × 104 L mol?1 and low detection limit (0.19 μM (S/N = 3)). 8 also represents the first report of a coordination polymer based on oxadiazol-pyridine derivatives with a luminescence response to Cr2O72? anion pollutants in aqueous solutions.
