0181533 - UFCH-W 20020163 RIV US eng J - Článek v odborném periodiku
Kaim, W. - Schwederski, B. - Dogan, A. - Fiedler, Jan - Kuehl, CH. - Stang, P. J.
Metalla-Supramolecular Rectangles as Electron Reservoirs for Multielectron Reduction and Oxidation.
Inorganic Chemistry. Roč. 41, - (2002), s. 4025-4028. ISSN 0020-1669. E-ISSN 1520-510X
Grant CEP: GA MŠMT OC D15.10; GA MŠMT ME 439
Výzkumný záměr: CEZ:AV0Z4040901
Klíčová slova: chemistry * ray crystal-structure * tetranuclear complexes
Kód oboru RIV: CG - Elektrochemie
Impakt faktor: 2.950, rok: 2002

The electron-transfer capacity of molecular rectangle ions [Pt-4(II)(PEt3)(8)(mu-anth(2-))(2)(mu-L)(2)](4+) with anth = anthracene-1,8-diyl and L = 4,4''-bipyridine (bp) or 1,2-bis(4-pyridyl)ethene (bpe) was investigated in acetonitrile and dichloromethane using cyclic voltammetry, EPR, and UV-vis-near-IR spectroelectrochemistry. The compounds can be reversibly reduced, first in a two-electron process and then via two closely separated one-electron steps. Oxidation was also possible at rather low potentials in a reversible two-electron step, followed by an electrochemically irreversible process. The spectroscopic results indicate reduction at the neutral acceptor ligands L and oxidation at the formally dianionic anthracene "clips". In contrast, the prototypical molecular square {[Pt(triphos)(mu-bp)](4)}(8+) undergoes only irreversible reduction.
Trvalý link: http://hdl.handle.net/11104/0001902