Molecular conformation and supramolecular aggregation in two fused pyrazoles: π-stackedR ₂ ²(6) dimers in 2,8,8-trimethyl-6,7,8,9-tetrahydropyrazolo[2,3-a]quinazolin-6-one, and sheets of alternatingR22(12) andR66(48) rings in 3-tert-butyl-4′,4′-dimethyl-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridine-5-spiro-1′-cyclohexane-2′,6′-dione | Publicación