Parameter calibration of transition-metal elements for the spin-polarized self-consistent-charge density-functional tight-binding (DFTB) method: Sc, Ti, Fe, Co, and Ni
2007 (English)In: Journal of Chemical Theory and Computation, ISSN 1549-9618, E-ISSN 1549-9626, Vol. 3, no 4, 1349-1367 p.Article in journal (Refereed) Published
Recently developed parameters for five first-row transition-metal elements (M = Sc, Ti, Fe, Co, and Ni) in combination with H, C, N, and O as well as the same metal (M-M) for the spin-polarized self-consistent-charge density-functional tight-binding (DFTB) method have been calibrated. To test their performance a couple sets of compounds have been selected to represent a variety of interactions and bonding schemes that occur frequently in transition-metal containing systems. The results show that the DFTB method with the present parameters in most cases reproduces structural properties very well, but the bond energies and the relative energies of different spin states only qualitatively compared to the B3LYP/SDD+6-31G(d) density functional (DFT) results. An application to the ONIOM(DFT:DFTB) indicates that DFTB works well as the low level method for the ONIOM calculation.
Place, publisher, year, edition, pages
2007. Vol. 3, no 4, 1349-1367 p.
IdentifiersURN: urn:nbn:se:uu:diva-145477DOI: 10.1021/ct600312fISI: 000247893400013OAI: oai:DiVA.org:uu-145477DiVA: diva2:396499
Times Cited: 262011-02-102011-02-092016-10-27Bibliographically approved