organic compounds
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The title molecule, C9H8ClN3O3, lies on a mirror plane. Intramolecular N—HO and N—HCl hydrogen bonds occur. One of the nitro O atoms is disordered (site occupancy ratio = 0.40:0.10).
organic compounds
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The title compound, C30H36N2O2, was prepared in a twofold Cadogan cyclization. The molecule is located about a center of inversion. The indolocarbazole skeleton is essentially planar [maximum deviation = 0.028 (2) Å], the C-N bond lengths are nearly identical and the C-C bond lengths of the pyrrole unit are significantly longer than those of the benzene subunits.
organic compounds
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The title compound, C22H20N2O2, was prepared in a twofold Cadogan cyclization followed by double N-methylation. The crystal structure is characterized by a zigzag arrangement of centrosymmetric molecules. The indolocarbazole framework is essentially planar [maximum deviation = 0.028 (2) Å] and the methoxy groups are orthogonal to this plane [C-C-O-C torsion angle = -88.2 (2)°]. The lengths of the C-N bonds are nearly identical and all C-C bonds of the pyrrole subunit are significantly longer than the C-C bonds in the benzene rings.
organic compounds
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The title compound, C54H69N9O3·CHCl3·C2H5OH, was prepared by a threefold nucleophilic substitution of p-neomenthyloxyphenyltetrazole on cyanuric chloride followed by threefold cycloelimination of nitrogen and ring closure. The central tristriazolotriazine is roughly planar with a maximum deviation of 0.089 (7) Å but the adjacent benzene rings are twisted out of this plane. N-C-C-C torsion angles of -80.2 (9), 159.3 (7) and 50.6 (10)° destroy the formal C3 symmetry. Cavities are found between the phenoxy residues: one is occupied by a chloroform molecule, another by ethanol forming a hydrogen bond to a triazole ring while two isopropyl groups point into the third void. One methyl group and the chlorofrm molecule are disorderd and were refined using a split model.
organic compounds
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The piperidine ring of the title compound, C15H25N3O3, adopts a slightly distorted chair conformation with the cis substituents displaying an N—C—C—C torsion angle of 43.0 (3)°. The cyano group (plane defined by C—C—CN atoms) is bent slightly out of the plane of the amide group by 13.3 (2)°. The carbamate group is oriented at a dihedral angle of 60.3 (5)° relative to the amide group.
organic compounds
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The title compound, C24H32N2O2, was prepared by Horner olefination of 4-diethylamino-3,5-diisopropylbenzaldehyde and diethyl p-nitrobenzylphosphonate. There are two independent molecules (A and B) in the asymmetric unit. Their main axes, defined by the line connecting the N atoms of the nitro and amino groups, open an angle of 79.42 (3)°. Steric hindrance around the amino group is reflected in a long aryl C-N bond [1.434 (3) Å for molecule A and 1.440 (3) Å for molecule B], a pyramidal geometry [angle sum = 350.0 (2)° for molecule A and 349.6 (2)° for molecule B], and dihedral angles between the phenylene group and the plane defined by the CH2-N-CH2 unit of 86.9 (3)° for molecule A and 88.3 (3)° for molecule B. This gives structural support for the electronic decoupling of the amino group from the nearly planar nitrostilbene moiety (r.m.s. deviation for C, N and O atoms = 0.097 for molecule A and 0.107 Å for molecule B).