29597
Strong interaction with P containing ligands is attributed to their lower IP and the lone pair --> metal electron donation accompanied with the back - donation characteristic for P containing ligand .
 Chemical: P; Chemical: P
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: P; Chemical: P