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Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
5,5'-(p-Phenyl-ene)di-1H-tetra-zole
Xiang He1, Bao-Li An, Ming-Xing Li
1Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, People's Republic of China.
Abstract:
Crystals of the title organic compound, C(8)H(6)N(8), were generated in situ through the [2 + 3]-cyclo-addition reaction involving the precursor 1,4-dicyano-benzene and azide in water with Zn(2+) as Lewis acid. The asymmetric unit consists of one half-mol-ecule, and a twofold axis of symmetry passes through the centre of the benzene ring. There is an inter-molecular N-H⋯N hydrogen bond. The mol-ecules are assembled into a three-dimensional supra-molecular framework by π-π stacking inter-actions, with a perpendicular distance of 3.256 Å [centroid-centroid = 3.9731 (8) Å] between two tetra-zole ring planes, and 3.382 Å between the benz-ene ring and tetra-zole ring planes [centroid-centroid = 3.5010 (9) Å].
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