title: Hydrogen-bonded bilayers in 7-benzyl-3-tert-butyl-1-phenyl-4,5,6,7-tetrahydro-1H-spiro[pyrazolo[3,4-b]pyridine-5,2'-indan]-1',3'-dione.
abstract: In the title compound, C₃₁H₂₉N₃O₂, the reduced pyridine ring adopts a conformation intermediate between the envelope and half-chair forms. The aryl rings of the benzyl and phenyl substituents are nearly parallel and overlap, indicative of an intramolecular π-π stacking interaction. A combination of two C-H∙∙∙O hydrogen bonds and one C-H∙∙∙N hydrogen bond links the molecules into a bilayer having tert-butyl groups on both faces.
authors.affiliation: Grupo de Investigación de Compuestas Heteocíclicos, Departamento de Química, Universidad de Valle, AA 25360 Cali, Colombia.
authors.forename: Jairo
authors.initials: J
authors.lastname: Quiroga
authors.forename: Dayana
authors.initials: D
authors.lastname: Pantoja
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; D007189:Indans / Q000138:chemical synthesis / Q000737:chemistry*; D013058:Mass Spectrometry; D015394:Molecular Structure; D011720:Pyrazoles / Q000138:chemical synthesis / Q000737:chemistry*; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry*; D013141:Spiro Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D007189:Indans; D011720:Pyrazoles; D011725:Pyridines; D013141:Spiro Compounds
keywords: crystal structure; hydrogen bonding; spiro compounds