content_image/894918.jpg content_image/894925.jpg content_image/894919.jpg content_image/894920.jpg content_image/894921.jpg
<img src='content_image/894918.jpg'>

<img src='content_image/894925.jpg'>

[0160] In formula (4), x- is an anion selected from the formulae ( 4A) to ( 4D). 

<img src='content_image/894919.jpg'>

<img src='content_image/894920.jpg'>

<img src='content_image/894921.jpg'>

[0161] In formula (4A), wa is fluorine or a straight, branched or cyclic C$_{1 }$-C$_{40 }$monovalent hydrocarbon group 

(4A) 

