AND/NOT sensing of fluoride and cyanide ions by ferrocene-derivatised Lewis acids.

[摘要]：A simple two-component sensor system was developed, featuring the strongly Lewis acidic (but air-stable) FcRBMes2(1:FcR = (h5-C5H4)Fe(h5-C5R5), R = H, Me; Mes = 2,4,6-Me3C6H2), which can be shown to bind both fluoride AND cyanide in soln. (but not other anions), and the weaker boronic ester Lewis acid FcRB(OR)2 (2: (OR)2 = R,r-OC(H)PhC(H)PhO), which signals the presence of fluoride but NOT cyanide in soln. By coupling the electrochem. shifts with a suitable redox-active tetrazolium dye, a colorimetric AND/NOT sensor system for fluoride and cyanide ions can be developed.

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