27490
The relative binding energies of ions were generally consistent with the ordering previously reported from solution phase experiments ; however , the relatively strong binding of H2PO4 ( - ) to the bidentate receptor contrasted the solution phase observation of oxoanions having weaker interactions when compared to halides .
 Chemical: H2PO4 ( - ); Chemical: oxoanions; Chemical: halides
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: H2PO4 ( - ); Chemical: oxoanions; Chemical: halides