title: Crystal structure of N-[4-amino-5-cyano-6-(methyl-sulfan-yl)pyridin-2-yl]-2-(cyclo-hexyl-sulfan-yl)acetamide.
abstract: In the title mol-ecule, C15H20N4OS2, the acetamido fragment is nearly coplanar with the pyridyl ring [C-N-C-C torsion angle = -4.1 (2)°], while the cyclo-hexyl-sulfanyl portion protrudes from this plane [N-C-C-S torsion angle = -40.8 (6)°]. In the crystal, alternating pairwise N-H⋯O and N-H⋯N hydrogen bonds across inversion centres form chains along [101], which are associated into stepped layers via offset π-π stacking between pyridyl rings [centroid-centroid distance = 3.566 (1) Å]. The cyclo-hexyl group and the two atoms of the S-C bond attached to it are disordered over two sets of sites with site-occupancy factors of 0.8845 (18) and 0.1155 (18).
authors.affiliation: Department of Chemistry, Tulane University, New Orleans, LA 70118, USA.
authors.forename: Joel T
authors.initials: JT
authors.lastname: Mague
authors.affiliation: Chemistry and Environmental Division, Manchester Metropolitan University, Manchester, M1 5GD, England.
authors.forename: Shaaban K
authors.initials: SK
authors.lastname: Mohamed
authors.affiliation: Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Akkurt
authors.affiliation: Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt.
authors.forename: Bahgat R M
authors.initials: BR
authors.lastname: Hussein
authors.affiliation: Kirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq.
authors.forename: Mustafa R
authors.initials: MR
authors.lastname: Albayati
keywords: acetamido; crystal structure; cyclo­hexyl­sulfan­yl; hydrogen bonds; π–π stacking