Abstract
Two-, three-, and four-body interaction energies are calculated for tetrahedral, octahedral, and cubic arrangements of H2O molecules around an Fe3+ ion using ab initio molecular orbital theory. The results show a slow convergence of the interaction terms and the importance of many-body effects, which may account for the incorrect coordination number obtained using ab initio pair potentials in computer simulations of Fe3+ and other multivalent ions in water.
Original language | English (US) |
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Pages (from-to) | 89-94 |
Number of pages | 6 |
Journal | Chemical Physics |
Volume | 133 |
Issue number | 1 |
DOIs | |
State | Published - May 1 1989 |
Bibliographical note
Funding Information:This work is supported by the US Department of Energy, Division of Materials Sciences,O ffice of Basic Energy Sciences,u nder Contract W-3 1-1 09-ENG-38.