title: Crystal structure of 1,5-diethyl-3',5'-di-phenyl-1,5-di-hydro-3'H-spiro-[pyra-zolo[3,4-d]pyrimidine-4,2'-[1,3,4]thia-diazole].
abstract: In the title compound, C22H22N6S, the pyrazolo-[3,4-d]pyrimidine rings system is almost planar, with the r.m.s. deviation for the fitted atoms being 0.011 Å. The two phenyl groups linked to the thia-diazole ring are nearly perpendicular to the fused-ring system as indicated by the dihedral angles of 86.93 (10) and 83.35 (11)°. However, the phenyl rings are almost coplanar with the thia-diazole ring (r.m.s. deviation = 0.015 Å), forming dihedral angles of 10.44 (11) and 10.06 (12)°. In the crystal, mol-ecules are connected into a supra-molecular layer in the ac plane via C-H⋯π inter-actions.
authors.affiliation: Laboratoire de Chimie Organique Hétérocyclique URAC 21, Pôle de Compétence Pharmacochimie, Av. Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V, Rabat, Morocco.
authors.forename: Mohammed
authors.initials: M
authors.lastname: El Fal
authors.affiliation: Laboratory of Medicinal Chemistry, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco.
authors.forename: Youssef
authors.initials: Y
authors.lastname: Ramli
authors.affiliation: Laboratoire de Chimie Organique Hétérocyclique URAC 21, Pôle de Compétence Pharmacochimie, Av. Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V, Rabat, Morocco.
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi
authors.affiliation: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Saadi
authors.affiliation: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors.forename: Lahcen
authors.initials: L
authors.lastname: El Ammari
keywords: crystal structure; pyrazolo­[3,4-d]pyrimidine; thia­diazole