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. 2010 Dec 11;67(Pt 1):o94.
doi: 10.1107/S160053681005018X.

1-[5-(Anthracen-9-yl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethanone

Ming-Liang Wang  1 , Bao-Li Dong, Yong-Hua Li
Affiliations

1-[5-(Anthracen-9-yl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethanone

Ming-Liang Wang et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound, C(25)H(20)N(2)O, the pyrazoline ring is nearly planar [maximum atomic deviation = 0.0254 (17) Å]; but the anthracene ring system is distorted from a coplanar structure [maximum atomic deviation = 0.181 (3) Å], the dihedral angle between the outer benzene rings being 10.68 (13)°. The pyrazoline ring is almost perpendicular to the mean plane of the anthracene ring system [dihedral angle = 76.94 (8)°], but nearly coplanar with the phenyl ring [dihedral angle = 1.63 (7)°]. π-π stacking is observed between parallel benzene rings of adjacent anthracene units, the face-to-face distance being 3.27 (3) Å. Weak intra-molecular C-H⋯N hydrogen bonding also occurs.

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Figures

Fig. 1.
Fig. 1.
The structure of the title molecule. The displacement ellipsoids are drawn at the 30% probability level.
See this image and copyright information in PMC

References

    1. Christoph, J. F., Liuchun, Y. & Donald, G. V. (2003). J. Am. Chem. Soc 125, 3799–3812. - PubMed
    1. Krishna, R., Velmurugan, D., Murugesan, R., Shanmuga Sundaram, M. & Raghunathan, R. (1999). Acta Cryst. C55, 1676–1677.
    1. Parmar, S. S., Pandey, B. R., Dwivedi, C. & Harbison, R. D. (1974). J. Pharm. Sci. 63, 1152–1155. - PubMed
    1. Rigaku (2005). CrystalClear Rigaku Corporation, Tokyo, Japan.
    1. Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. - PubMed