3-Hydroxy-2,2-bis(1 H -pyrazol-1-yl)cyclopentanone (original) (raw)

2012, Acta Crystallographica Section E Structure Reports Online

Key indicators: single-crystal X-ray study; T = 295 K; mean (C-C) = 0.003 Å; R factor = 0.046; wR factor = 0.124; data-to-parameter ratio = 15.6.

Sign up for access to the world's latest research.

checkGet notified about relevant papers

checkSave papers to use in your research

checkJoin the discussion with peers

checkTrack your impact

4,5,6,7,8,9-Hexahydro-2H-cycloocta[c]pyrazol-1-ium-3-olate, Hoong-Kun Fun, Chin Sing Yeap, R. Venkat Ragavan, V. Vijayakumar and S. Sarveswari, Acta Cryst. (2010). E66, o3019

14-Methoxy-4,6-dimethyl-9-phenyl-8,12- dioxa-4,6-diazatetracyclo[8.8.0.02,7.- 013,18]octadeca-2(7),13,15,17-tetraene- 3,5,11-trione

Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.004 Å; R factor = 0.047; wR factor = 0.141; data-to-parameter ratio = 12.9.

Crystal structure of (4Z)-1-(3,4-di-chloro-phen-yl)-4-[hy-droxy(4-methyl-phen-yl)methyl-idene]-3-methyl-4,5-di-hydro-1H-pyrazol-5-one

Acta crystallographica. Section E, Structure reports online, 2014

The title compound, C 18 H 14 Cl 2 N 2 O 2 , crystallizes with two molecules, A and B, in the asymmetric unit. In molecule A, the dihedral angles between the central pyrazole ring and pendant dichlorobenzene and p-tolyl rings are 2.18 (16) and 46.78 (16) , respectively. In molecule B, the equivalent angles are 27.45 (16) and 40.45 (18) , respectively. Each molecule features an intramolecular O-HÁ Á ÁO hydrogen bond, which closes an S(6) ring and molecule A also features a C-HÁ Á ÁO interaction. In the crystal, weak C-HÁ Á Á interactions and aromaticstacking [shortest centroid-centroid separation = 3.707 (2) Å ] generate a three-dimensional network.

Crystal structure of 4-[1-(2-hydroxypropyl)-4,5-diphenyl-1 H -imidazol-2-yl]benzoic acid

Acta Crystallographica Section E Crystallographic Communications, 2015

In the title compound, C 25 H 22 N 2 O 3 , the central imidazole ring makes dihedral angles of 48.43 (10), 20.23 (10) and 75.38 (11) with the benzene ring and the two phenyl rings, respectively. The phenyl ring adjacent to the N-bonded 2-hydroxypropyl group shows the greatest twist, presumably to minimize steric interactions. In the crystal, molecules are linked by O-HÁ Á ÁN, O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds, forming a threedimensional network. In addition, C-HÁ Á Á interactions are also observed.

Loading...

Loading Preview

Sorry, preview is currently unavailable. You can download the paper by clicking the button above.

(1R,2R,3S,6aS,7R,8R,9S,12aS)-1,2,3,7,8,9-Hexahydroxyperhydrodipyrido[1,2-a:1′,2′-d]pyrazine-6,12-dione

Acta Crystallographica Section E Structure Reports Online, 2010

Structure of ethyl (3aRS, 4aSR, 5RS, 6aSR, 7aSR)-7-benzyl-3-(p-chlorophenyl)-6-cyano-3a, 4, 4a, 5, 6, 6a, 7, 7a-octahydrocyclobut [b] isoxazolo [4, 5-e] pyridine-4a- …

… Section C: Crystal …, 1989