Crystal structure of (E)-2-[(4-chloro-2H-chromen-3-yl)methyl-idene]-N-cyclo-hexyl-hydrazinecarbo-thio-amide

Rajeswari Gangadharan; Jebiti Haribabu; Ramasamy Karvembu; K Sethusankar

doi:10.1107/S1600536814018509

Crystal structure of (E)-2-[(4-chloro-2H-chromen-3-yl)methyl-idene]-N-cyclo-hexyl-hydrazinecarbo-thio-amide

Acta Crystallogr Sect E Struct Rep Online. 2014 Aug 23;70(Pt 9):o1039-40. doi: 10.1107/S1600536814018509. eCollection 2014 Sep 1.

Authors

Rajeswari Gangadharan¹, Jebiti Haribabu², Ramasamy Karvembu², K Sethusankar³

Affiliations

¹ Department of Physics, Ethiraj College for Women (Autonomous), Chennai 600 008, India.
² Department of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, India.
³ Department of Physics, RKM Vivekananda College (Autonomous), Chennai 600 004, India.

Abstract

In the title compound, C17H20ClN3OS, the mean plane of the central thio-urea core makes dihedral angles of 26.56 (9) and 47.62 (12)° with the mean planes of the chromene moiety and the cyclo-hexyl ring, respectively. The cyclo-hexyl ring adopts a chair conformation. The N-H atoms of the thio-urea unit adopt an anti conformation. The chromene group is positioned trans, whereas the cyclo-hexyl ring lies in the cis position to the thione S atom, with respect to the thio-urea C-N bond. In the crystal, mol-ecules are linked by N-H⋯S hydrogen bonds, forming inversion dimers enclosing R (2) 2(8) ring motifs. The dimers are linked by C-H⋯Cl hydrogen bonds, enclosing R (6) 6(44) ring motifs, forming sheets lying parallel to (010).

Keywords: chromene; crystal structure; cyclohexyl; hydrazine; hydrogen bonds; thioamide.