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1.  O-Propyl N-phenyl­thio­carbamate 
Two independent mol­ecules comprise the asymmetric unit in the title thio­carbamide derivative, C10H13NOS. These differ in the relative orientations of terminal ethyl groups [C—C—C—O torsion angles = −66.95 (13) and 55.92 (13)°, respectively]. The phenyl ring is twisted out of the plane of the central residue [Cq—N—Cph—Cph = −146.20 (12) and −144.15 (12)°, respectively; q = quaternary and ph = phen­yl]. The independent mol­ecules are linked into a dimeric aggregate by N—H⋯S hydrogen bonds and an eight-membered thio­amide {⋯H—N—C=S}2 synthon.
doi:10.1107/S160053681202140X
PMCID: PMC3379354  PMID: 22719552
2.  1,3-Bis(2-chloro­phen­yl)thio­urea: a monoclinic polymorph 
The title compound, C13H10Cl2N2S, represents a monoclinic polymorph of the previously reported ortho­rhom­bic form [Ramnathan et al. (1996 ▶). Acta Cryst. C52, 134–136]. The mol­ecule is twisted with the dihedral angle between the benzene rings being 55.37 (7)°. The N—H atoms are syn to each other, which contrasts their anti disposition in the ortho­rhom­bic form. In the crystal, mol­ecules assemble into zigzag chains along the c axis via N—H⋯S hydrogen bonds. Chains are connected into layers via C—H⋯Cl inter­actions, and these stack along the a axis.
doi:10.1107/S1600536811041894
PMCID: PMC3247371  PMID: 22219989

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