12348
The second step is rate - limiting and is facilitated by the presence of the high - spin Mn ( 2 + ) ion that functions as a Lewis acid and stabilizes the leaving oxyanion through direct coordination .
 Chemical: Mn ( 2 + ); Chemical: Lewis acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Mn ( 2 + ); Chemical: Lewis acid