title: Cation-induced pi-stacking.
abstract: The design and synthesis of a new dipyridyl ligand with appended phenanthryl moieties is described. On addition of increments of silver(I) trifluoromethanesulfonate to a solution of the ligand, the phenanthryl protons shift upfield in the (1)H NMR spectrum, suggesting that the phenanthrenes pi-stack on coordination of silver(I). In accord with this, the oxidation potential decreased from 1.74 to 1.55 V on complexation of silver(I). The pi-stacking was confirmed with the single-crystal X-ray structure of a palladium(II) coordination complex.
authors.affiliation: Chemistry Department, Missouri State University, Springfield, MO 65897, USA. ericbosch@missouristate.edu
authors.forename: Eric
authors.initials: E
authors.lastname: Bosch
authors.forename: Charles L
authors.initials: CL
authors.lastname: Barnes
authors.forename: Nathan L
authors.initials: NL
authors.lastname: Brennan
authors.forename: Galen L
authors.initials: GL
authors.lastname: Eakins
authors.forename: Bryan E
authors.initials: BE
authors.lastname: Breyfogle
mesh_terms: D015082:2,2'-Dipyridyl / Q000138:chemical synthesis* / Q000737:chemistry*; D002412:Cations / Q000138:chemical synthesis / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D018360:Crystallography, X-Ray; D004563:Electrochemistry; D008024:Ligands; D008698:Mesylates / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry; D010165:Palladium / Q000737:chemistry; D010616:Phenanthrenes / Q000737:chemistry*; D012834:Silver / Q000737:chemistry
chemical_list: D002412:Cations; D008024:Ligands; D008698:Mesylates; D009942:Organometallic Compounds; D010616:Phenanthrenes; D012834:Silver; D015082:2,2'-Dipyridyl; D010165:Palladium; D003300:Copper; C012077:trifluoromethanesulfonic acid