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Updated: Jul 19, 2026

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
Published on: February 5, 2022
Water exchange dynamics of manganese(II), cobalt(II), and nickel(II) ions in aqueous solution
Hannes H Loffler1, Ahmed M Mohammed, Yasuhiro Inada
1Laboratory of Analytical Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan. hal@iam.u-tokyo.ac.jp
Abstract:
The first row transition metal ions Mn(2+), Co(2+), and Ni(2+) have been studied by classical umbrella sampling molecular dynamics simulations. The water exchange mechanisms, estimates of reaction rates, as well as structural changes during the activation process are discussed. Mn(2+) was found to react via an I(A) mechanism, whereas Co(2+) and Ni(2+) both proceed via I(D). Reaction rate constants are generally higher than those obtained by experiment but the simply constructed metal(II) ion-water potential reproduces the relative order quite well.
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