title: With regard to the hydrogen bonding in complexes of pyridylureas, less is more. a role for shape complementarity and CH...O interactions?
abstract: A pyridylurea.tetraazaanthracenedione complex with three hydrogen bonds is more stable than an analogous complex with four hydrogen bonds. An X-ray analysis and modeling suggests a steric mismatch destabilizing the latter and a CH...O contact enhancing the stability of the former.
authors.affiliation: Department of Chemistry, 600 South Mathews Avenue, University of Illinois, Urbana, Illinios 61801, USA.
authors.forename: Jordan R
authors.initials: JR
authors.lastname: Quinn
authors.forename: Steven C
authors.initials: SC
authors.lastname: Zimmerman
mesh_terms: D000880:Anthraquinones / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D014508:Urea / Q000031:analogs & derivatives / Q000737:chemistry*
chemical_list: D000880:Anthraquinones; D014508:Urea