“…The presence of one water molecule remote from the phosphonate groups resulted in a faster water-H 2 O 2 exchange as compared to the slow aquation of [FeY(OH)] 6Ϫ . An extension of these studies using [Fe(NTMP)(OH)] 4Ϫ complex [see Structure (2)] [NTMP ϭ nitrilotris(methylene-phosphonate)] was done in nitrate media [112]. (1) (2) Structures (1) The rate was first order in both the [complex] and [H 2 O 2 ] and Ϫ0.5 in [H ϩ ].…”