Fig. 6. PES of (a) [CH(Tf)2]−, (b) [N(TFA)2]−, (c) [CH(TFA)2]−, (d) [CH(Tf)(TFA)]−, (e) [N(Ms)2]−, and (f) [N(Tf)(TFA)]−. Black circles denote minima, black crosses denote transition states. The dotted line is drawn at 15 kJ mol−1 to facilitate comparison with other surfaces. The vertical black line drawn at 90° in (a) indicates the position of the slice used in Fig. 7, 11 and 12. The area enclosed by the bold red line in (d) is sufficient to describe the PES.
