Cation-induced pi-stacking.
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.
Bosch
Eric
E
Chemistry Department, Missouri State University, Springfield, MO 65897, USA. ericbosch@missouristate.edu
Barnes
Charles L
CL
Brennan
Nathan L
NL
Eakins
Galen L
GL
Breyfogle
Bryan E
BE
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
D002412:Cations; D008024:Ligands; D008698:Mesylates; D009942:Organometallic Compounds; D010616:Phenanthrenes; D012834:Silver; D015082:2,2'-Dipyridyl; D010165:Palladium; D003300:Copper; C012077:trifluoromethanesulfonic acid