Preparation of 2,4,5,6-Tetra(9H-carbazol-9-yl)isophthalonitrile
نویسندگان
چکیده
منابع مشابه
Pii: S0197-2456(01)00196-9
Studies that compare treatments with the purpose of demonstrating that the treatments are similar require an a priori definition of an equivalence limit, how different the treatments can be before the difference is of concern. Defining such an equivalence limit is one of the most difficult aspects of planning the study. Three principles are proposed for setting such limits, depending on the obj...
متن کامل(9H-Carbazol-9-ylmethyl)diethylamine
The asymmetric unit of the title compound, C(17)H(20)N(2), contains two mol-ecules, whose bond lengths and angles differ only slightly. In the crystal, neighbouring mol-ecules form pillar structures via edge-to-face π-π stacking inter-actions [edge-to-face distances = 3.538 (3) and 3.496 (3)Å].
متن کامل2-(Carbazol-9-yl)acetic acid
In the title compound, C(14)H(11)NO(2), the tricyclic aromatic ring system is essentially planar [maximum deviation = 0.025 (2) Å]. The dihedral angle between the two benzene rings is 2.8 (5)°, while the carboxyl group forms a dihedral angle of 88.5 (1)° with the pyrrole ring. Inter-molecular O-H⋯O hydrogen bonds may contribute to the overall stabilization of the crystal structure.
متن کاملPolymorph of 4-(carbazol-9-yl)benzonitrile
The asymmetric unit of the title compound, C(19)H(12)N(2), contains two independent mol-ecules with a similar structure. In the two mol-ecules, the dihedral angles between the carbazole ring system and the benzene ring are 47.9 (5) and 45.4 (4)°, similar to the value of 47.89 (6)° found in the previously reported structure [Saha & Samanta (1999 ▶). Acta Cryst. C55, 1299-1300]. In the crystal, t...
متن کامل9-[3-(Carbazol-9-yl)-5-methylphenyl]carbazole
The title compound, C31H22N2, crystallizes with two symmetry-independent mol-ecules in the asymmetric unit. The mol-ecules have slightly different conformations, the dihedral angles between the central phenyl ring and the carbazolyl groups being 56.29 (4) and 59.57 (4)° in one mol-ecule and 48.71 (4) and 65.47 (4)° in the other. In the crystal, mol-ecules are linked by weak C-H⋯π and π-π [centr...
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ژورنال
عنوان ژورنال: Organic Syntheses
سال: 2019
ISSN: 2333-3553
DOI: 10.15227/orgsyn.096.0455