| Sumario: | The title compound, C11H20N2O2S, is an enantiomerically pure heterocycle-substituted thiourea synthesized under solventfree conditions. The thiourea unit adopts a ZZ conformation, with the HN—(C S)—NH core almost planar and the tetrahydrofurfuryl groups placed below and above this plane. The whole molecule thus approximates to noncrystallographic C2 symmetry. Unexpectedly, the C S group is not involved in intermolecular hydrogen bonding, as generally observed in homodisubstituted thioureas. Instead, molecules form a onedimensional network based on weak N—H...O(heterocycle) hydrogen bonding, resulting in a zigzag ribbon-like structure around the crystallographic 21 screw axis along [100].
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