title: Isolated molecules in 2-ethylsulfanyl-7-methyl-4-(4-methylphenyl)pyrazolo[1,5-a][1,3,5]triazine and hydrogen-bonded sheets of R2/2(10), R2/2(16), R4/4(22) and R4/4(24) rings in 2-ethylsulfanyl-7-methyl-4-(4-nitrophenyl)pyrazolo[1,5-a][1,3,5]triazine.
abstract: In each of 2-ethylsulfanyl-7-methyl-4-(4-methylphenyl)pyrazolo[1,5-a][1,3,5]triazine, C15H16N4S, (I), and 2-ethylsulfanyl-7-methyl-4-(4-nitrophenyl)pyrazolo[1,5-a][1,3,5]triazine, C14H13N5O2S, (II), there is significant bond fixation in the heterocyclic component. While there are no direction-specific intermolecular interactions in the structure of (I), the molecules of (II) are linked by a combination of C-H...O and C-H...S hydrogen bonds into sheets containing four types of ring, all centrosymmetric.
authors.affiliation: Departamento de Química, Universidad de Nariño, Ciudad Universitaria Torobajo, AA 1175 Pasto, Colombia.
authors.forename: Henry
authors.initials: H
authors.lastname: Insuasty
authors.forename: Martin
authors.initials: M
authors.lastname: Estrada
authors.forename: Justo
authors.initials: J
authors.lastname: Cobo
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D011720:Pyrazoles / Q000737:chemistry*; D014227:Triazines / Q000737:chemistry*
chemical_list: C515687:2-ethylsulfanyl-7-methyl-4-(4-methylphenyl)pyrazolo(1,5-a)(1,3,5)triazine; C515688:2-ethylsulfanyl-7-methyl-4-(4-nitrophenyl)pyrazolo(1,5-a)(1,3,5)triazine; D011720:Pyrazoles; D014227:Triazines