Zhao, Baohai; Lin, Jimao; Zhao, Cuihua; Wang, Ziying published an article in Acta Crystallographica, Section E: Structure Reports Online. The title of the article was 《1,4-Dimethoxy-2,5-bis{2-[4-(trifluoromethyl)phenyl]ethynyl}benzene》.Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene The author mentioned the following in the article:
The asym. unit of the title compound, C26H16F6O2, contains one half of the mol. situated on an inversion center. In the rod-like mol., the two terminal benzene rings form a dihedral angle of 71.9 (1)° with the central benzene ring. The trifluoromethyl group is rotationally disordered over two orientations in a 0.53 (1):0.47 (1) ratio. The crystal packing exhibits no classical intermol. interactions. The results came from multiple reactions, including the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene)
1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzeneAlthough ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem