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13C and 1H chemical shifts in 2-benzylidene[3]ferrocenophane-1,3-diones. Elucidation of the substituent dependence of carbonyl chemical shifts in different carbonyl derivatives

✍ Scribed by E. Solčániovà; Š. Toma; M. Sališová; T. Liptaj

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
346 KB
Volume
21
Category
Article
ISSN
0749-1581

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✦ Synopsis

The -C and 'H chemical shifts of the ferrocene moiety, as well as the carbonyl carbons and styrene moiety, of substituted 2-benzylidene[3]ferroeenophane-l,3-diones have been assigned. Correlations of -C substituent chemical shifts of both carbonyl carbons with the Hammett constants have been found, and the effect of the transmission of substituent effects on these chemical shifts through the styrene moiety is discussed. An explanation is given for the different sensitivities of the carbonyl carbon chemical shifts to the electronic effect of substituents in mono-and dicarbonyl derivatives.

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