14829
A new and simple method is proposed to explore the mechanism of the intercalation / deintercalation of a variety of anions throughout the formation of alpha - Co ( OH ) 2 crystals and their polymorphic conversion to beta - Co ( OH ) 2 .
 alpha - Co ( OH ) 2, beta - Co ( OH ) 2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 alpha - Co ( OH ) 2, beta - Co ( OH ) 2