title: Multiple coordination geometries supported by methylene-linked guanidines.
abstract: The methylene-linked bicyclic guanidine based on the 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine (hppH) framework provides a versatile platform able to support trigonal-planar, tetrahedral, and square-planar metal centers.
authors.affiliation: Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, UK.
authors.forename: Sarah H
authors.initials: SH
authors.lastname: Oakley
authors.forename: Martyn P
authors.initials: MP
authors.lastname: Coles
authors.forename: Peter B
authors.initials: PB
authors.lastname: Hitchcock
mesh_terms: D001643:Bridged Bicyclo Compounds; D018360:Crystallography, X-Ray; D006146:Guanidines / Q000138:chemical synthesis* / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: D001643:Bridged Bicyclo Compounds; D006146:Guanidines; D009942:Organometallic Compounds