N-[(1aR,5aR,8R,9aR)-1,1-Dichloro-1a,5,5,7-tetramethyl-1a,2,3,4,5,5a,8,9-octahydro-1H-benzo[a]cyclopropa[b][7]annulen-8-yl]acetamide

N-[(1aR,5aR,8R,9aR)-1,1-Dichloro-1a,5,5,7-tetramethyl-1a,2,3,4,5,5a,8,9-octahydro-1H-benzo[a]cyclopropa[b][7]annulen-8-yl]acetamide

In the title compound, C18H27Cl2NO, the cyclohexene ring has an envelope conformation, with the C atom at the 9a position as the flap. The cycloheptane ring, to which it is fused, has a boat conformation. The dihedral angle between their mean planes is 60.7 (2)°. The 1,1-dichloro-cyclopropane ring i...

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Bibliographic Details
Main Authors: Ahmed Benharref, Lahcen El Ammari, Mohamed Saadi, Moha Taourirte, Abdelouahd Oukhrib, Moha Berraho
Format: Article
Language:English
Published: International Union of Crystallography 2017-04-01
Series:IUCrData
Subjects:
crystal structure
β himachalene
three fused rings
hydrogen bonding
Online Access:http://scripts.iucr.org/cgi-bin/paper?S2414314617004928
Description
Summary:In the title compound, C18H27Cl2NO, the cyclohexene ring has an envelope conformation, with the C atom at the 9a position as the flap. The cycloheptane ring, to which it is fused, has a boat conformation. The dihedral angle between their mean planes is 60.7 (2)°. The 1,1-dichloro-cyclopropane ring is inclined to these two ring mean planes by 88.5 (3) and 28.3 (3)°, respectively. In the crystal, molecules are linked by N—H...O hydrogen bonds, forming 61 helices along the c-axis direction. The absolute configuration of the molecule in the crystal could be fully confirmed from anomalous dispersion effects [Flack parameter = 0.020 (15)].
ISSN:2414-3146

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