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Crystal structure of 13-(2-meth-oxy-phenyl)-3,4-di-hydro-2H-indazolo[1,2-b]phthalazine-1,6,11(13H)-trione.

ABSTRACT: In the title compound, C22H18N2O4, the three fused rings of the pyrazolo-phthalazine moiety are coplanar (r.m.s. deviation = 0.027?Å). The cyclo-hexene ring fused to the pyrazolidine ring, so forming the indazolophthalazine unit, has a half-chair conformation. The benzene ring is almost normal to the mean plane of the pyrazolo-phthalazine moiety, with a dihedral angle of 87.21?(6)° between their planes. In the crystal, mol-ecules are linked by pairs of C-H?O hydrogen bonds forming inversion dimers. The dimers are linked via C-H?? inter-actions, forming slabs parallel to (100). Between the slabs there are weak ?-? inter-actions [shortest inter-centroid distance = 3.6664?(9)?Å], leading to the formation of a three-dimensional structure.

SUBMITTER: Bouraiou A 

PROVIDER: S-EPMC4571420 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature

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Crystal structure of 13-(2-meth-oxy-phenyl)-3,4-di-hydro-2H-indazolo[1,2-b]phthalazine-1,6,11(13H)-trione.

Bouraiou Abdelmalek A   Bouacida Sofiane S   Merazig Hocine H   Chibani Aissa A   Bouaziz Zouhair Z  

Acta crystallographica. Section E, Crystallographic communications 20150725 Pt 8

In the title compound, C22H18N2O4, the three fused rings of the pyrazolo-phthalazine moiety are coplanar (r.m.s. deviation = 0.027 Å). The cyclo-hexene ring fused to the pyrazolidine ring, so forming the indazolophthalazine unit, has a half-chair conformation. The benzene ring is almost normal to the mean plane of the pyrazolo-phthalazine moiety, with a dihedral angle of 87.21 (6)° between their planes. In the crystal, mol-ecules are linked by pairs of C-H⋯O hydrogen bonds forming inversion dime  ...[more]

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