title: A π-stacked chain of hydrogen-bonded dimers in 3-tert-butyl-1-(4-chlorophenyl)-4-phenylindeno[1,2-b]pyrazolo[4,3-e]pyridin-5(1H)-one and a π-stacked sheet of hydrogen-bonded chains in 3-tert-butyl-1-(4-chlorophenyl)-4-(4-methoxyphenyl)indeno[1,2-b]pyrazolo[4,3-e]pyridin-5(1H)-one.
abstract: In 3-tert-butyl-1-(4-chlorophenyl)-4-phenylindeno[1,2-b]pyrazolo[4,3-e]pyridin-5(1H)-one, C(29)H(22)ClN(3)O, (I), inversion-related pairs of molecules are linked by C-H...O hydrogen bonds to form R(2)(2)(18) dimers, which are themselves linked into a chain by a π-π stacking interaction between inversion-related pairs of molecules. In 3-tert-butyl-1-(4-chlorophenyl)-4-(4-methoxyphenyl)indeno[1,2-b]pyrazolo[4,3-e]pyridin-5(1H)-one, C(30)H(24)ClN(3)O(2), (II), which crystallizes in the space group P-1, with Z' = 2 and with different orientations for the methoxy groups in the two independent molecules, a combination of C-H···O and C-H···π(arene) hydrogen bonds links the molecules into chains of rings, which are further linked into sheets by a π-π stacking interaction.
authors.affiliation: Grupo de Investigación en Compuestos Bio-orgánicos, Departamento de Química, Universidad de los Andes, Cra. 1E No. 18A-10, Edificio H, A.A. 4976, Bogotá D.C., Colombia.
authors.forename: Jaime
authors.initials: J
authors.lastname: Portilla
authors.forename: Carolina
authors.initials: C
authors.lastname: Lizarazo
authors.forename: Justo
authors.initials: J
authors.lastname: Cobo
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D015394:Molecular Structure; D011720:Pyrazoles / Q000737:chemistry*; D011728:Pyridones / Q000737:chemistry*
chemical_list: C570270:3-tert-butyl-1-(4-chlorophenyl)-4-(4-methoxyphenyl)indeno(1,2-b)pyrazolo(4,3-e)pyridin-5(1H)-one; C570269:3-tert-butyl-1-(4-chlorophenyl)-4-phenylindeno(1,2-b)pyrazolo(4,3-e)pyridin-5(1H)-one; D011720:Pyrazoles; D011728:Pyridones