Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 23, Issue 17, Pages 10402-10408Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cp01092a
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Funding
- Kempe Foundation [JCK-2029.1]
- Swedish National Science Foundation [2018-07039, SNIC 2020/5-480]
- Swedish Research Council [2018-07039] Funding Source: Swedish Research Council
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Density functional theory was used to explore the factors governing the substitution of group 4B-12B metals into the decaniobate framework, accurately predicting substitution patterns and guiding future synthetic efforts. The calculations also revealed trends and potential synthetic approaches for a large series of [MNb9O28](x-) clusters. OPBE/def2-tzvp correctly predicted favored spin states of known substituted decametalates.
The factors governing the substitution of group 4B-12B metals into the decaniobate framework are explored using density functional theory in order to ascertain whether (1) recently isolated [MNb9O28](x-) clusters are kinetic or thermodynamic products, (2) density functional theory is a sufficient level of theory to accurately predict substitution patterns in polyoxometalates where ion pairing and other effects may operate, and (3) it can be used to guide future synthetic efforts. Computations using restricted, unrestricted and open-shell density functional theory at PBE0/def2-tzvp were found to correctly predict substitution patterns in known clusters, and were subsequently used to calculate the relative energies of a large series of [MNb9O28](x-) clusters, to reveal trends and suggest potential synthetic approaches. OPBE/def2-tzvp correctly predicted favoured spin states of known substituted decametalates.
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