research communications
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In two benzo[4,5]imidazo[2,1-c][1,4]oxazepine-4-carboxylates, the seven-membered oxazepane rings both have a twist-chair conformation. The dihedral angle between the phenyl ring and the benzimidazole ring system is significantly smaller in one of the compounds, viz. 73.42 (10) compared to 83.07 (17)°.
research communications
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In the title compound, the acenapthylene ring system and the hydrazinecarbothioamide unit (=N—NH—C=S—NH–) are essentially coplanar, making a dihedral angle of 1.59 (9)°. The molecular conformation is stabilized by two weak intramolecular hydrogen bonds (N—HO and N—HN), which generate S(6) and S(5) ring motifs.
data reports
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Crystal structure of (2E)-N-methyl-2-[(4-oxo-4H-chromen-3-yl)methylidene]hydrazinecarbothioamide
In the title compound, C12H11N3O2S, the dihedral angle between the 4H-chromen-4-one ring system and the –CH=N—NH—CS—NH– unit is 6.22 (1)°. In the crystal, inversion dimers linked by pairs of N—HO hydrogen bonds generate R22(14) loops. The dimers are reinforced by a pair of C—HO interactions, which generate R22(10) loops.