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2-(4-Bromo­phen­yl)oxazolo[3,2-a]pyrimidinium perchlorate

✍ Scribed by Rybakov, Victor B. ;Alifanov, Vadim L. ;Babaev, Eugene V.

Publisher
International Union of Crystallography
Year
2006
Tongue
English
Weight
159 KB
Volume
62
Category
Article
ISSN
1600-5368

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✦ Synopsis

The title compound, C 12 H 8 BrN 2 O + ÁClO 4 À , was synthesized and characterized by 1 H NMR and single-crystal X-ray diffraction. The essentially planar p-bromophenyl fragment and plane of the heterocyclic system form a dihedral angle of 1.79 (7) . Short intermolecular contacts (ca 3.0 A ˚) involving O atoms of a perchlorate anion may indicate the positive charge concentration on the bridgehead N atom of the cation.

📜 SIMILAR VOLUMES

2-(4-Bromo­phen­yl)-5,7-dimeth­yl[1,3]ox
2-(4-Bromo­phen­yl)-5,7-dimeth­yl[1,3]oxazolo[3,2-a]pyrimidin-4-ium perchlorate
✍ Rybakov, Victor B. ;Alifanov, Vadim L. ;Babaev, Eugene V. 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 153 KB

The title compound, C 14 H 12 BrN 2 O + ÁClO 4 À , was synthesized from the parent 2-aminooxazole and acetylacetone and characterized by 1 H NMR and single-crystal X-ray diffraction. The bromophenyl fragment and the essentially planar ninemembered bicyclic system form a dihedral angle of 10.50 (11)

3-(4-Bromo­phen­yl)-5-(4-chloro­phen­yl)
3-(4-Bromo­phen­yl)-5-(4-chloro­phen­yl)-1-phenyl-2-pyrazoline
✍ Guo, Huan-Mei ;Jian, Fang-Fang ;Xiao, Hai-Lian ;Sun, Xiao-Zheng ;Li, Yu-Feng 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 152 KB

In the title structure, C~21~H~16~BrClN~2~, the pyrazoline ring is approximately coplanar with the __N__-substituted phenyl ring. The dihedral angles formed by the pyrazoline ring with the 4-chlorophenyl and 4-bromophenyl rings are 78.82 and 10.9°, respectively.

[3-Benzoyl-2,4-bis­(3-bromo­phen­yl)cycl
[3-Benzoyl-2,4-bis­(3-bromo­phen­yl)cyclo­butyl](phen­yl)methanone
✍ Fun, Hoong-Kun ;Chantrapromma, Suchada ;Goswami, Shyamaprosad ;Jana, Subrata 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 264 KB

Molecules of the title compound, C 30 H 22 Br 2 O 2 , lie across crystallographic inversion centres. The dihedral angle between the phenyl and bromobenzene rings is 23.88 (8) . Weak C-HÁ Á ÁO interactions link the molecules into ribbons along the a axis.