title: Crystal structure of 5,5-bis-(4-methyl-benz-yl)pyrimidine-2,4,6(1H,3H,5H)-trione monohydrate.
abstract: The asymmetric unit of the title compound, C20H20N2O3·H2O, contains two independent mol-ecules (A and B), with similar conformations and two independent water mol-ecules. In the crystal, N-H⋯O and Owater-H⋯O hydrogen bonds link all moieties into two crystallographically independent kinds of sheets parallel to the ac plane. These independent sheets, each containing either A or B mol-ecules, are further alternately stacked along the b axis and inter-connected via C-H⋯πar-yl inter-actions.
authors.affiliation: Prof. CNR Rao Centre for Advanced Materials and Department of Chemistry, UCS, Tumkur University, Tumkur 572 103, India.
authors.forename: Bhaskarachar
authors.initials: B
authors.lastname: Ravi Kiran
authors.affiliation: Prof. CNR Rao Centre for Advanced Materials and Department of Chemistry, UCS, Tumkur University, Tumkur 572 103, India.
authors.forename: Parameshwar Adimule
authors.initials: PA
authors.lastname: Suchetan
authors.affiliation: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India.
authors.forename: Hosamani
authors.initials: H
authors.lastname: Amar
authors.affiliation: Prof. CNR Rao Centre for Advanced Materials and Department of Chemistry, UCS, Tumkur University, Tumkur 572 103, India.
authors.forename: Giriyapura R
authors.initials: GR
authors.lastname: Vijayakumar
keywords: C—H⋯π inter­actions; Knoevenagel condensation; crystal structure; hydrogen-bonded sheets; pyrimidine; three-dimensional structure