title: Ethyl 4-(4-cyano-phen-yl)-6-methyl-2-thioxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate.
abstract: The asymmetric unit of the title compound, C(15)H(15)N(3)O(2)S, contains two independent mol-ecules corresponding to the R and S enanti-omers. The dihydro-pyrimidinone rings adopt a flattened boat conformation. One of the ethyl groups is disordered over two orientations with occupancy factors of 0.700 (7) and 0.300 (7). In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen-bonding inter-actions into one-dimensional chains along the c-axis direction. The chains are further connected by N-H⋯S hydrogen bonds, forming a three-dimensional network.
authors.affiliation: Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Southeast University, Nanjing 210096, People's Republic of China.
authors.forename: De-Hong
authors.initials: DH
authors.lastname: Wu
authors.forename: You-Hong
authors.initials: YH
authors.lastname: Zhang
authors.forename: Zhu-Feng
authors.initials: ZF
authors.lastname: Li