Research Article: 5-(4-Eth­oxy­phen­yl)-3-(pyridin-2-yl)-4,5-dihydro-1H-pyrazole-1-carbothio­amide

Date Published: March 01, 2012

Publisher: International Union of Crystallography

Author(s): Suchada Chantrapromma, Phonpawee Nonthason, Thitipone Suwunwong, Hoong-Kun Fun.


In the title compound, C17H18N4OS, a pyrazoline derivative, the pyrazoline ring adopts an envelope conformation with the C atom bonded to the benzene ring as the flap atom. The dihedral angle between the pyridine and benzene rings is 80.50 (6)°. The eth­oxy­phenyl group is approximately planar, with an r.m.s. deviation of 0.0238 (1) Å for the nine non-H atoms. In the crystal, mol­ecules are linked by N—H⋯O and N—H⋯S hydrogen bonds into a tape along the b axis. Weak C—H⋯N and C—H⋯π inter­actions are also observed.

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For bond-length data, see: Allen et al. (1987 ▶). For related literature on ring conformations, see: Cremer & Pople (1975 ▶). For related structures, see: Fun et al. (2012 ▶); Nonthason et al. (2011 ▶). For background to and applications of pyrazoline derivatives, see: Amir et al. (2008 ▶); Gong et al. (2011 ▶); Husain et al. (2008 ▶); Manna & Agrawal (2009 ▶); Özdemir et al. (2007 ▶); Sarkar et al. (2010 ▶). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986 ▶).