The spin-spin coupling constants J199Hg-C-1H were determined for a series of methylmercuric carboranecarboxylates, ferrocenecarboxylate, and cyclopentadienylmanganesetricarbonylcarboxylate.
A relation was found between the J199Hg-C-1H values for the methylmercuric carboxylates RCOOHgCH3 and the Taft σ* constants. On the basis of this relation σ* values were calculated for the l-o-, 1-m-, and 1-p-carboranyl groups, ferrocenyl groups, and cyclopentadienylmanganesetricarbonyl groups.
The dissociation constants pKa for l-o-, 1-m-, and 1-p-carboranecarboxylic acids were calculated from the JHg-CH3 values.
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Kalinin, V.N., Fedorov, L.A., Gasanov, K.G. et al. Investigation of methylmercuric carboranecarboxylates by the PMR method. Russ Chem Bull 19, 2268–2270 (1970). https://doi.org/10.1007/BF00861519
- Dissociation Constant
- Ferrocenyl Group