Crystal and Molecular Structure of 7-Methyl-5,6,7,8-tetrahydro[1] benzothieno[2,3-d] pyrimidin-4[3H] one

X-ray characterization of 7-methyl-5,6,7,8- tetrahydro[1] benzothieno [2,3-d] pyrimidin-4[3H] one is described. The compound crystallizes in the monoclinic space group P2(1)/c with a=7.0013(2) angstrom, b=8.3116(3)angstrom, c=18.374(6)angstrom, beta=91.746(2)degrees, V=1068.76(6)angstrom(3), z=4. The structure was solved using the direct method and refined to reliability R-factor of 0.0639 using 3180 independent reflections The crystal structure is further stabilized by intermolecular C-H center dot center dot center dot N, N-H center dot center dot center dot N C-H center dot center dot center dot O, N-H center dot center dot center dot O, and pi-pi interactions