aggregation of q { fe ( iii ) l ( 2 ) } in chloroform was observed and the dimerization constant ( k ( d ) = [ q ( 2 ) { fe ( iii ) l ( 2 ) } ( 2 ) ] ( o ) / [ q { fe ( iii ) l ( 2 ) } ] ( o ) ( 2 ) ) was evaluated as log k ( d ) = 4.3 +/- 0.3 at 20 degrees . the neutral chelates of { fe ( ii ) ( hl ) ( 2 ) } and { fe ( iii ) ( hl ) l } , and the ion-pair of the cationic chelate , { fe ( iii ) ( hl ) ( 2 ) } clo ( 4 ) , were also extracted into chloroform or nitrobenzene .
C0022023
ion
C0007447
cationic