US 9,164,380 B2  135  136  -continued  -continued  [Chemical Formula 65]  Cation  In formula (c3),  z+  is the same as defined above for  z+  in  formula (cl).  As the compound (C3), a single compound may be used  alone, or a combination of two or more compounds may be  used.  Commercially available compounds may be used for the  compounds (Cl) to (C3), or the compounds may be synthe› sized using known production methods.  For example, although there are no particular limitations  on the method used for producing the compound ( C 1 ), in the  case where R 1$_{c }$ is the group  (I)  (namely, the case of the  compound (Cll)), the compound (Cll) can be obtained by  subjecting an acid (the compound (Gl)) that yields the anion  of the compound (Cl l) and a salt having the desired cation  z+  to a salt exchange reaction.  Although there are no particular limitations on the method  used for producing the compound (C3), in the case where R 3$_{c }$ in the aforementioned formula (c3) is a group having an  oxygen atom at the terminal bonded to Y 3 ,  the method  described below can be used.  Namely, a compound (i-1) represented by general formula  (i-1) shown below is reacted with a compound (i-2) repre- sented by general formula (i-2) shown below to obtain a  compound (i-3) represented by general formula (i-3) shown  below, and this compound (i-3) is then reacted with a salt  having the desired cation  z+  (a compound (i-4) represented  by general formula (i-4) shown below), thereby producing the  target compound.  0  0  0  O~N......._s,,,,,CF3  02  02  o~  e ,,,.s......._  N  CF3  0  02  0~  0 /  S ......,_  N  CF3  0  0  0  0  ,,,...N......._ /CF3  0  S  02  r"i  _,,N~ /CF3  0 - __,___,,,  S  V  02  Y’O-'_/N\/C;  0  0  ~N......._s,,,,,CF3  ~N"-s/CF3  02  02  ~N~s/CF3 ~N~s/CF3  02  02  0  ~  N ......._ 8  /CF3  02  [Chemical Formula 64]  (i-1)  (i-3)  (i-2)  (–)  0  z  Q  (i-4)  -- (i-3)  --