Acta Cryst. (2003). E59, o1596-o1598  [ doi:10.1107/S1600536803021597 ]

1,3-Di-2-pyridylthiourea monohydrate

H.-P. Zhong, L.-S. Long, R.-B. Huang, L.-S. Zheng and S. W. Ng

Abstract: The title compound, C₁₁H₁₀N₄S·H₂O, displays an intramoleculear N_amidoN_pyridyl hydrogen bond [2.652  (2)  Å] that locks the thiourea unit and one pyridyl ring into coplanarity [dihedral angle 2.7  (1)°]. The second pyridyl ring is also coplanar with the thiourea unit [dihedral angle 2.9  (1)°]. Its attached N atom interacts with the lattice water molecule to form a helical hydrogen-bonded chain that runs parallel to the b axis of the orthorhombic unit cell; adjacent chains are linked into a layer-like architecture by another hydrogen bond between the water molecule and the double-bonded S atom.

Online 7 October 2003

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