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Virtual ionic bridges

This value is significantly smaller than the y value of 0.95 bond" for saturated hydrocarbon bridges (Eq. 23), and it reflects the lower energies of the virtual ionic states of aromatic molecules compared to saturated hydrocarbon molecules (vide supra and Eq. 6). The value of y for these systems is, however, noticeably larger than that measured for photoinduced ET in 48(1) and 48(2). These elegant studies have been extended to cover other aromatic-bridge systems [130]. [Pg.1898]

Studies using the Na -specific chelate 18-crown-6 have established that apparent ionic strength effects in the reduction of [Co(edta)] by [Fe(CN)6] are best explained by complexation between the latter reagent and the inert cation Na". Active reductants are [Fe(CN)6]" and [NaFe(CN)6], while [Na2Fe(CN)6] was found to be virtually nonreactive. Besides reducing electrostatic interactions, the role of Na may be to act as a polarizable electron transfer bridge. [Pg.26]


See other pages where Virtual ionic bridges is mentioned: [Pg.15]    [Pg.16]    [Pg.1847]    [Pg.1847]    [Pg.15]    [Pg.16]    [Pg.1847]    [Pg.1847]    [Pg.229]    [Pg.487]    [Pg.49]    [Pg.1897]    [Pg.1903]    [Pg.59]    [Pg.106]    [Pg.39]    [Pg.371]    [Pg.286]    [Pg.166]    [Pg.55]    [Pg.108]    [Pg.310]    [Pg.1043]    [Pg.72]    [Pg.386]    [Pg.56]    [Pg.165]    [Pg.153]   
See also in sourсe #XX -- [ Pg.15 ]




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Ionic bridge

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