Equilibrium structure and bonding of small iron–carbon clusters

Nash, Beth K.; Rao, B. K.; Jena, P.
December 1996
Journal of Chemical Physics;12/22/1996, Vol. 105 Issue 24, p11020
Academic Journal
The equilibrium geometries, binding energies, and electronic structure of neutral FeC[SUBn] (n⩽3) clusters have been calculated self-consistently using ab initio molecular orbital theory. The exchange and correlation contributions to the total energy were computed using both the density functional method (with and without nonlocal correction) as well as the Hartree-Fock-Möller-Plesset theory. All levels of theory predict the equilibrium geometries to be cyclic. The binding energies, bond lengths, and the Mulliken charges obtained from both methods of calculations are also in agreement. The results are compared with recent mobility and photoelectron spectroscopy experiments.


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