content_image/928892.jpg content_image/928889.jpg content_image/928888.jpg content_image/928891.jpg content_image/928890.jpg
<img src='content_image/928892.jpg'>

<img src='content_image/928889.jpg'>

<img src='content_image/928888.jpg'>

-continued 

(ca-1-45) 

(ca-1-46) 

[0220] Specific suitable examples of the cation repre› sented by Formula ( ca-2) include a diphenyliodonium cation and a bis( 4-tert-butylphenyl)iodonium cation. 

[0221] Specific suitable examples of the cation repre› sented by Formula (ca-4) include cations represented by Formulae (ca-4-1) and (ca-4-2) shown below. 

<img src='content_image/928891.jpg'>

<img src='content_image/928890.jpg'>

[0222] As the cation represented by Formula (ca-5), cat› ions represented by Formulae (ca-5-1) to (ca-5-3) are pref› erable. 

(ca-4-1) 

(ca-4-2) 

(ca-5-1) 

