Dalbir Kour, D. R. Patil, M. Deshmukh
Dec 27, 2013
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Journal
European Chemical Bulletin
Abstract
The title compound 3,3,6,6-Tetramethyl-9-(3,4-dimethylphenyl)-3,4,6,7,9,10-hexahydroacridine-1,8- dione (C 25 H 31 N O 2 ) crystallizes in the monoclinic space group P 2 1 /c with unit cell parameters: a = 18.616(3), b = 9.9747(13), c = 11.8093(15) Ǻ, β = 91.89(13)o, Z = 4. The crystal structure was solved by direct methods and refined by full-matrix least-squares procedures to a final R-value of 0.075 for 3088 observed reflections. The central ring of the acridinedione system adopts a boat conformation. The four essentially planar atoms (C10/C11/C13/C14) of this ring [maximum deviations = 0.2047(3) Ǻ] forms dihedral angles of 87.32o(13) , with the benzene ring. The two outer rings of the acridinedione system adopt sofa conformations. The crystal packing is stabilized by intermolecular N-H…O interactions.