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The title compound, C19H20O6, consists of a tetra­substituted benzene ring with one substituent being an α,β-unsaturated cinnamoyl group, which forms an extended conjugated system in the mol­ecule. In addition, two meth­oxy­meth­oxy and one hy­droxy group are bonded to the central benzene ring. The dihedral angle between eh rings is 10.22 (10)°. An intra­molecular hydrogen bond is observed between the hy­droxy group and the carbonyl O atom. One of the meth­oxy­meth­oxy substituents is conformationally disordered over two sets of sites with site-occupation factors of 0.831 (3) and 0.169 (3).

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The title mol­ecule, C12H12N2OS, is planar, with an r.m.s. deviation of 0.04 Å. In the crystal, the N atom adjacent to the carbonyl group is sp2-hybridized. The crystal structure is stabilized by π–π stacking inter­actions observed between thio­phene and pyrimidinone rings of c-glide-related mol­ecules [centroid–centroid distance = 3.9554 (13) Å] and by C—H...π inter­actions, forming an infinite chain along the c-axis direction.
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