the structure of the pentamer ( a new p-p bonded phosphate ) produced by the hydrolysis of dodecaoxohexaphosphoric ( iii ) acid ( ring hexamer ) has been examined by an anion-exchange distribution method after complex formation with copper ( ii ) and found to be hpo ( oh ) po ( oh ) po ( oh ) po ( oh ) po ( oh ) h .
C0031603
phosphate
C0003075
anion