Lewis acid effects on donor–acceptor associations and redox reactions: ternary complexes of heteroaromatic N-oxides with boron trifluoride and organic donors
作者:Yakov P. Nizhnik、Jianjiang Lu、Sergiy V. Rosokha、Jay K. Kochi
DOI:10.1039/b9nj00205g
日期:——
red-shifted) as compared to the complexes between the same donors and NXO acceptors. Spectral data and electrochemical measurements point out enhanced acceptor abilities of [NXO·BF3] adducts relative to the separate N-oxides which correspond to ∼0.5 V positive shift of reductionpotentials of acceptors. Synergetic oxidation of strong organic donors by [NXO·BF3] dyads (which results in the formation of the corresponding
Continuum of Outer- and Inner-Sphere Mechanisms for Organic Electron Transfer. Steric Modulation of the Precursor Complex in Paramagnetic (Ion-Radical) Self-Exchanges
作者:Sergiy V. Rosokha、Jay K. Kochi
DOI:10.1021/ja069149m
日期:2007.3.1
as well as between different electron acceptors (A) paired with their anion radicals (A-*), are spectrally (UV-NIR) observed and structurally (X-ray) identified as the cofacial (pi-stacked) associates [D, D+*] and [A-*, A], respectively. Mulliken-Hush (two-state) analysis of their diagnostic intervalence bands affords the electronic coupling elements (HDA), which together with the Marcus reorganization
π-Bonded molecular wires: self-assembly of mixed-valence cation-radical stacks within the nanochannels formed by inert tetrakis[3,5-bis(trifluoromethyl)phenyl]borate anions
作者:Sergiy V. Rosokha、Charlotte L. Stern、Jeremy T. Ritzert
DOI:10.1039/c3ce41719k
日期:——
A series of mixed-valence cation-radicalsalts D(n+1) TFPBn, where D is a planar organic donor of about 0.7 to 0.9 nm wide and 1.1 to 1.3 nm long (e.g., tetramethyltetraselenafulvalene, octamethylanthracene, octamethylbiphenylene, perylene) and TFPB is a tetrakis[3,5-bis(trifluoromethyl)phenyl]borate anion, were crystallized and characterized via single-crystal X-ray analyses and UV–vis-NIR-IR measurements
Preparation and Structures of Crystalline Aromatic Cation-Radical Salts. Triethyloxonium Hexachloroantimonate as a Novel (One-Electron) Oxidant
作者:R. Rathore、A. S. Kumar、S. V. Lindeman、J. K. Kochi
DOI:10.1021/jo980407a
日期:1998.8.1
Triethyloxonium hexachloroantimonate [Et(3)O(+)SbCl(6)(-)] is a selective oxidant of aromatic donors (ArH), and it allows the facile preparation and isolation of crystalline paramagnetic salts [ArH(+)(*), SbCl(6)(-)] for the X-ray structure determination of various aromatic cation radicals. The mechanistic relationship between the Meerwein salt [Et(3)O(+)SbCl(6)(-)] and the pure Lewis acid oxidant
Electron Redistribution of Aromatic Ligands in (Arene)Cr(CO)<sub>3</sub> Complexes. Structural (Bond-Length) Changes as Quantitative Measures
作者:P. Le Maguères、S. V. Lindeman、J. K. Kochi
DOI:10.1021/om000658l
日期:2001.1.1
Arene ligands experience significant ring expansion upon coordination with chromiumtricarbonyl, as established by precise X-ray crystallographic analyses of various (η6-arene)Cr(CO)3 complexes. Such changes in ligand structures result from the charge (electron) redistribution, Ar+−Cr-, upon arene coordination, since they are closely related to those found in the intermolecular 1:1 complexes of the