Crystal structures of two hydrazinecarbo-thio-amide derivatives: (E)-N-ethyl-2-[(4-oxo-4H-chromen-3-yl)methyl-idene]hydrazinecarbo-thio-amide hemi-hydrate and (E)-2-[(4-chloro-2H-chromen-3-yl)methyl-idene]-N-phenyl-hydrazinecarbo-thio-amide

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Acta crystallographica.Section E, Crystallographic communications

Acta Crystallogr.E.Crystallogr.Commun.

21-Feb

Pt 3

305

308

LR: 20150408; JID: 101648987; OID: NLM: PMC4350706; OTO: NOTNLM; 2015/03/01 [ecollection]; 2015/02/04 [received]; 2015/02/17 [accepted]; 2015/02/21 [epublish]; epublish

England

2056-9890

PMID: 25844194

eng

Journal Article

10.1107/S2056989015003369 [doi]

Unknown(0)

25844194

The title compounds, C13H13N3O2S.0.5H2O, (I), and C17H14ClN3OS, (II), are hydrazinecarbo-thio-amide derivatives. Compound (I) crystallizes with two independent mol-ecules (A and B) and a water mol-ecule of crystallization in the asymmetric unit. The chromene moiety is essentially planar in mol-ecules A and B, with maximum deviations of 0.028 (3) and 0.016 (3) A, respectively, for the carbonyl C atoms. In (II), the pyran ring of the chromene moiety adopts a screw-boat conformation and the phenyl ring is inclined by 61.18 (9) degrees to its mean plane. In the crystal of (I), bifurcated N-Hcdots, three dots, centeredO and C-Hcdots, three dots, centeredO hydrogen bonds link the two independent mol-ecules forming A-B dimers with two R 2 (1)(6) ring motifs, and R 2 (2)(10) and R 2 (2)(14) ring motifs. In addition to these, the water mol-ecule forms tetra-furcated hydrogen bonds which alternately generate R 4 (4)(12) and R 6 (6)(22) graph-set ring motifs. There are also pi-pi [inter-centroid distances = 3.5648 (14) and 3.6825 (15) A] inter-actions present, leading to the formation of columns along the c-axis direction. In the crystal of (II), mol-ecules are linked by pairs of N-Hcdots, three dots, centeredS hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif. The dimers are linked by C-Hcdots, three dots, centeredpi inter-actions, forming ribbons lying parallel to (210).

Gangadharan,R., Haribabu,J., Karvembu,R., Sethusankar,K.

Department of Physics, Ethiraj College for Women (Autonomous), Chennai 600 008, India.; Department of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, India.; Department of Chemistry, National Institute of Technology, Tiruchirappalli

20150221

PMC4350706

http://vp9py7xf3h.search.serialssolutions.com/?charset=utf-8&pmid=25844194

2015