Metallacarboranes as tunable redox potential electrochemical indicators for screening of gene mutation.

The substitution of hydrogen with chlorine in the metallacarborane [3,3-Fe(1,2--CBH)] cluster modulates the formal potential of the Fe/Fe redox couple, shifting it to a more positive value. Hence, very similar redox probes with a wide range of formal potentials, ranging from negative to positive values, are available. Thus, we have achieved the synthesis and studied the electrochemical behaviour of the sodium salt of [3,3-Fe(8,9,12-Cl-1,2--CBH)] in aqueous media.