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The Structure of Benzene*

Nature volume 141, pages 11501151 (25 June 1938) | Download Citation



FOR many years attempts were made to explain the peculiarities of aromatic compounds by making various special hypotheses relating to the benzene nucleus. It is a satisfactory feature of the present situation that the theory of benzene is simply a special—and specially important—case of an established general extension of valency theory, and that this extension uses essentially the same physical principles as are applied in the interpretation of valency itself. These are the postulates of the 'new' quantum theory (fundamentally the principle of com-plementality), which provide at once a physical basis for the forces of valency, and for such departures from the ordinary valency rules as are illustrated so strikingly in the parent of the aromatic series.

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