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Chalcogen heterocycles cations

Cationic polar cycloaddition, 16, 289 (19, xi) Cations, polycyclic aromatic nitrogen, 55,261 Chalcogen heterocyclic chemistry, some recent developments in, 71, 115 Chemistry... [Pg.305]

Electrochemical studies indicate that the redox behaviours of the different derivatives are dominated by the nature of the chalcogen at position 2, with the selenium containing cations more readily reduced (by more than 0.1 V) than the sulfur analogues.82 The difference has been ascribed to the extent of delocalisation of the positive charge away from the heterocycle, onto the fused aromatic ring. [Pg.754]

Similar, but less stable, selenium homocycles, as well as mixed sulfur-selenium related heterocycles formed by heteroatom replacement, are also well docnmented. Cationic chalcogen homocycles are also known and have been reviewed. ... [Pg.5998]

See other pages where Chalcogen heterocycles cations is mentioned: [Pg.1007]    [Pg.140]    [Pg.167]    [Pg.240]    [Pg.459]    [Pg.774]    [Pg.410]    [Pg.54]    [Pg.276]    [Pg.368]    [Pg.120]    [Pg.82]    [Pg.23]    [Pg.459]    [Pg.774]    [Pg.18]    [Pg.24]   
See also in sourсe #XX -- [ Pg.3 , Pg.4 , Pg.293 ]



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Cations heterocyclic

Chalcogen

Chalcogen heterocycles

Chalcogene heterocycles

Chalcogens

Chalcogens 671 cations

Heterocyclic cationic

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