Butyl-2,3-dimethyl imidazolium azide

Andriyko Y, Nauer G E. Electrochemistry of TiC14 in l-butyl-2,3-dimethyl imidazolium azide. Electrochim. Acta. 2007. 53, 957-962. 

Fig. 6.1 (a) Structure of 1 -butyl-2,3-dimethyl imidazolium tetrafluoroborate (BMMImBF4) and (b) 1-butyl-2,3-dimethyl imidazolium azide (BMMImNa)... 

Solutions of TiCU in l-Butyl-2,3-Dimethyl Imidazolium Azide... 

It is known that the products of electrochemical decomposition of fluoroborate salts contain fluorinated compounds [12], which are enviroirnientaUy harmful. That is why the azide compound, BMMIiiiNa, is considered as a potentially environmental friendlier electrolyte. The electrochemical reduction of TiCU solutions in BMMImNs IL at 65 °C which is about 20 °C higher than the melting point of the IL has been studied in [8]. This salt was synthesised using the reaction of l-butyl-2,3-dimethyl imidazolium chloride with sodium azide in acetone ... 

Fig. 6.2 Voltammetry of the pure l-butyl-2,3-dimethyl imidazolium ionic liquids with (1) azide and (2) fluoroborate cations potential sweep rate 100 mV s, temperature 65 °C, Pt working electrode, Ag/AgCl reference electrode...

Except for the azide IL where only shallow reduction of Ti(lV) is possible, the non-stationary reduction mechanism of Ti(lV) in both a titanium chloride and fluoride-1-butyl-2,3-dimethyl imidazolium tetrafluoroborate electrolyte is a sequence of one-electron steps with the formation of the Ti(lll), Ti(ll) and Ti(l) low valence... 

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