Synthesis and characterization of 1,4-chalcogenesters bearing 5-membered heterocycles

Ferrocenyl–triazole complexes and their use in heavy metal cation sensing

“…Electrochemical measurements were performed using 1.0 mmol L −1 solutions of the analytes and [N n Bu 4 ][B(C 6 F 5 ) 4 ] as the supporting electrolyte in anhydrous dichloromethane at 25 °C. 32,33,38,54 The instrumentation consisted of a Radiometer Gamry interface 1010E workstation interfaced with a personal computer. The measurement cell comprised three electrodes: a Pt auxiliary electrode, a glassy carbon working electrode, and a Ag/Ag + (0.01 mol L −1 AgNO 3 ) reference electrode.…”

“…The electrochemical behavior of 3, 6, 7, and 9 was investigated by cyclic voltammetry (CV) using an anhydrous dichloromethane solution of [N n Bu 4 ][B(C 6 F 5 ) 4 ] (0.1 mol L −1 ) as a supporting electrolyte. 32,33,38,[54][55][56]59,101 The electrochemical measurements were conducted at 25 °C under an argon atmosphere and referenced against the potential of the FcH/FcH + redox couple. In all compounds, reversible and well-dened redox events were observed, as illustrated in Fig.…”

“…[29][30][31][32][33] In addition, heterocyclic compounds such as oxazolines, imidazoles, and triazoles have proven to be efficient recognition units for metal cation detection. [34][35][36][37][38][39] Therefore, ferrocenes are considered invaluable templates as redoxmoieties and in combination with a triazole-heterocyclic derivative can be expected to offer a greater surface area available for the deposition of specic analytes as well as an enhancement in the electron-transfer processes, and consequently, such compounds should stimulate the modied electrodes to behave as multiple signaling molecular selective chemo-sensors for metal cations. 4,5,29,[40][41][42][43][44][45][46][47][48] Herein, we present the synthesis and characterization of diverse ferrocenyl-containing triazole complexes.…”