Abstract

The crystal structure of dimethylformamide solvated 3,3,6,6-tetramethyl-9-(3-chlorophenyl)-3,4,6,7,9,10-hexahydroacridine-1,8-dione
(C26H33ClN2O3) crystallizes in the triclinic space group P-1 with unit cell parameters: a=9.0814(4), b=11.5650(5), c=12.1354(5) Ǻ,
=91.806(3)º, β=96.450(3)º, = 104.565(4)º and Z=2. The crystal structure was solved by direct methods and refined by full-matrix leastsquares procedures to a final R-value of 0.056 for 2691 observed reflections. The central ring of the acridinedione system adopts a boat
conformation and the two outer rings adopt sofa conformations. The solvent moiety (dimethylformamide) is involved in the existence of
intra and intermolecular C-H...O interactions.

Key words: Acridinediones; Crystal structure; Direct methods; Dimer; N-H…O and C-H...O intra and intermolecular interactions.