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Salt bridge formation between ferrocenecarboxylic acid and an excess of a N,N′-diethylsubstituted benzamidine leads to a -0.27 V shift in the half-wave potential of the ferrocene moiety, corresponding to a 26 kJ mol-1 stabilisation of the ferrocenium state. [Copyright &y& Elsevier]

We describe the electrochemically controlled hydrogen bonding interactions between the isobutyl flavin/2,6-diferrocenylamidopyridine (2·5) and 9,10-phenanthrenequinone/1-ferrocenyl-3-hexylurea (4·6) dyads. Cyclic and square wave voltammetry studies have shown that the binding efficiencies between these moieties can be electrochemically actuated in non-polar (CH2Cl2 for 2·5) or polar (DMF for 4·6) organic solvents between three distinct states. [Copyright &y& Elsevier]

We have investigated the electrochemically controlled hydrogen bonding interactions between tetrathiafulvalene host 3 and guests 4 or 5. Stabilisation of the 3+⋅ state is dependent upon the nature of the guest species, whereas both guests prevent precipitation of the electrochemically generated 32+ species at the working electrode via hydrogen bonded molecular recognition processes. [Copyright &y& Elsevier]