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Volume 67 
Part 10 
Page o2700  
October 2011  

Received 14 September 2011
Accepted 15 September 2011
Online 30 September 2011

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Key indicators
Single-crystal X-ray study
T = 293 K
Mean [sigma](C-C) = 0.003 Å
R = 0.047
wR = 0.131
Data-to-parameter ratio = 17.0
Details
Open access

4-(1,3-Benzothiazol-2-yl)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

Imane Chakib,a Abdelfettah Zerzouf,a Youssef Kandri Rodi,b El Mokhtar Essassia and Seik Weng Ngc,d*

aLaboratoire de Chimie Organique Hétérocyclique, Pôle de Compétences Pharmacochimie, Université Mohammed V-Agdal, BP 1014 Avenue Ibn Batout, Rabat, Morocco,bLaboratoire de Chimie Organique Appliquée, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdallah, Fés, Morocco,cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and dChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
Correspondence e-mail: seikweng@um.edu.my

The central five-membered ring of the title compound, C18H15N3OS, is almost planar (r.m.s. deviation = 0.028 Å) and the benzothiazole fused-ring system is close to coplanar with this ring [dihedral angle = 6.1 (1)°]. The phenyl substituent is twisted by 62.5 (1)°.

Related literature

For the structure of the reactant 4-(2,3-dihydro-1,3-benzothiazol-2-ylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one, see: Chakibe et al. (2010[Chakibe, I., Zerzouf, A., Essassi, E. M., Reichelt, M. & Reuter, H. (2010). Acta Cryst. E66, o1096.]).

[Scheme 1]

Experimental

Crystal data

  • C18H15N3OS

  • Mr = 321.39

  • Monoclinic, P 21 /c

  • a = 8.7428 (2) Å

  • b = 25.7551 (5) Å

  • c = 6.9660 (1) Å

  • [beta] = 97.460 (1)°

  • V = 1555.27 (5) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 0.22 mm-1

  • T = 293 K

  • 0.50 × 0.10 × 0.10 mm
Data collection

  • Bruker APEXII diffractometer

  • Absorption correction: multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.]) Tmin = 0.900, Tmax = 0.979

  • 18953 measured reflections

  • 3569 independent reflections

  • 2418 reflections with I > 2[sigma](I)

  • Rint = 0.053
Refinement

  • R[F2 > 2[sigma](F2)] = 0.047

  • wR(F2) = 0.131

  • S = 1.01

  • 3569 reflections

  • 210 parameters

  • H-atom parameters constrained

  • [Delta][rho]max = 0.26 e Å-3

  • [Delta][rho]min = -0.27 e Å-3

Data collection: APEX2 (Bruker, 2005[Bruker (2005). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2005[Bruker (2005). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: X-SEED (Barbour, 2001[Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.]); software used to prepare material for publication: publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: JH2331 ).

Acknowledgements

The authors thank Université Sidi Mohamed Ben Abdallah, Université Mohammed V-Agdal and the University of Malaya for supporting this study.

References

Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.  [CrossRef] [ChemPort]
Bruker (2005). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Chakibe, I., Zerzouf, A., Essassi, E. M., Reichelt, M. & Reuter, H. (2010). Acta Cryst. E66, o1096.  [CSD] [CrossRef] [details]
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.  [ISI] [CrossRef] [ChemPort] [details]

Acta Cryst (2011). E67, o2700  [ doi:10.1107/S1600536811037652 ]

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