Dimerization of aromatic ureido pyrimidinedione derivatives: observation of an unexpected tautomer in the solid state.
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.
Cui
Lu
L
Center for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, FL 33124-0431, USA.
Gadde
Suresh
S
Shukla
Atindra D
AD
Sun
Hao
H
Mague
Joel T
JT
Kaifer
Angel E
AE