title: Strong electronic couplings between ferrocenyl centers mediated by bis-ethynyl/butadiynyl diruthenium bridges.
abstract: A series of trans-(FcC(2n))Ru(2)(Y-DMBA)(4)(C(2m)Fc) with n, m = 1 and 2 and Y-DMBA as N,N'-dimethylbenzamidinate or N,N'-dimethyl-(3-methoxy)benzamidinate have been synthesized and characterized. The intramolecular Fc...Fc distances, established through single-crystal X-ray diffraction studies, range from 11.6 to 16.6 A. Results from both voltammetric and spectroelectrochemical studies indicate that the (-C(2n))Ru(2)(Y-DMBA)(4)(C(2m-) fragments are among the most efficient mediators of intramolecular hole transfer. Density-functional calculations offer both the insight on the ground-state electronic properties and unambiguous assignment for the observed electronic absorptions.
authors.affiliation: Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA.
authors.forename: Guo-Lin
authors.initials: GL
authors.lastname: Xu
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Crutchley
authors.forename: Maria C
authors.initials: MC
authors.lastname: DeRosa
authors.forename: Qing-Jiang
authors.initials: QJ
authors.lastname: Pan
authors.forename: Hong-Xing
authors.initials: HX
authors.lastname: Zhang
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Wang
authors.forename: Tong
authors.initials: T
authors.lastname: Ren
mesh_terms: D018360:Crystallography, X-Ray; D004583:Electrons; D005296:Ferrous Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*
chemical_list: D005296:Ferrous Compounds; D009942:Organometallic Compounds; D012428:Ruthenium