13879
The unsymmetrical ( unsym ) arrangement of the dppv ligands is reflected in the values of A ( ( 31 ) P ) , which range from 31 MHz for the basal phosphines to 284 MHz for the apical phosphine .
 Chemical: dppv; Chemical: ( 31 ) P; Chemical: phosphines; Chemical: phosphine
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: dppv; Chemical: ( 31 ) P; Chemical: phosphines; Chemical: phosphine