Transport Processes and Equilibria in th
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H. J. Engell
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Article
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1964
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John Wiley and Sons
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English
⚖ 136 KB
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NMR-spectroscopic examination of ( 4 ) , (5), and ( 6 ) , and of prototypes of ( 2) and (3) showed that the x-bonds are largely localized in these cyclic cross-conjugated systems. On the assumption of changes of bond lengths typical for olefins, molecular-orbital calculations by Nnkajimn on ( I ) ga