Despite considerable bond alternation, the planar cyclooctatetraene (COT) moiety in tetrakis(bicyclo[2.1.1]hexeno)cyclooctatetraene (1(D4h)) sustains a strong central paratropic ring current, as expected of an antiaromatic monocycle. The paratropic ring current of the COT moiety can be switched on or off by tuning the rotationally allowed COT HOMO-LUMO transition, for example, by choosing saturated or unsaturated clamps.
Paratropic delocalized ring currents in flattened cyclooctatetraene systems with bond alternation
Soncini A.;
2002
Abstract
Despite considerable bond alternation, the planar cyclooctatetraene (COT) moiety in tetrakis(bicyclo[2.1.1]hexeno)cyclooctatetraene (1(D4h)) sustains a strong central paratropic ring current, as expected of an antiaromatic monocycle. The paratropic ring current of the COT moiety can be switched on or off by tuning the rotationally allowed COT HOMO-LUMO transition, for example, by choosing saturated or unsaturated clamps.File in questo prodotto:
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