title: 9-(4-Hy-droxy-3-meth-oxy-phen-yl)-3,3,6,6-tetra-methyl-1,2,3,4,5,6,7,8,9,10-deca-hydro-acridine-1,8-dione.
abstract: In the title mol-ecule, C24H29NO4, the central ring of the acridinedione system adopts a flat boat conformation and the four essentially planar atoms of this ring [maximum deviation = 0.001 (2) Å] form a dihedral angle of 85.99 (12)° with the benzene ring. The two outer rings of the acridinedione system adopt sofa conformations. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules, forming a two-dimensional network parallel to (100).
authors.affiliation: X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India.
authors.forename: Rajni
authors.initials: R
authors.lastname: Kant
authors.forename: Vivek K
authors.initials: VK
authors.lastname: Gupta
authors.forename: Kamini
authors.initials: K
authors.lastname: Kapoor
authors.forename: D R
authors.initials: DR
authors.lastname: Patil
authors.forename: P P
authors.initials: PP
authors.lastname: Patil
authors.forename: Madhukar B
authors.initials: MB
authors.lastname: Deshmukh