title: Dimerization of aromatic ureido pyrimidinedione derivatives: observation of an unexpected tautomer in the solid state.
abstract: Ureido pyrimidinedione derivatives with phenyl, 1-naphthyl and 2-naphthyl substituents form stable dimers via quadruple hydrogen bonding, but the 1-naphthyl derivative presents an unexpected tautomer in the solid state.
authors.affiliation: Center for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, FL 33124-0431, USA.
authors.forename: Lu
authors.initials: L
authors.lastname: Cui
authors.forename: Suresh
authors.initials: S
authors.lastname: Gadde
authors.forename: Atindra D
authors.initials: AD
authors.lastname: Shukla
authors.forename: Hao
authors.initials: H
authors.lastname: Sun
authors.forename: Joel T
authors.initials: JT
authors.lastname: Mague
authors.forename: Angel E
authors.initials: AE
authors.lastname: Kaifer