The role of the [CpM(CO)2]- chromophore in the optical properties of the [Cp2ThMCp(CO)2]+ complexes, where M = Fe, Ru and Os. A theoretical view

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Abstract

The chemical bond between actinide and the transition metal unsupported by bridging ligands is not well characterized. In this paper we study the electronic properties, bonding nature and optical spectra in a family of [Cp2ThMCp(CO)2]+ complexes where M = Fe, Ru, Os, based on the relativistic two component density functional theory calculations. The Morokuma-Ziegler energy decomposition analysis shows an important ionic contribution in the Th-M interaction with around 25% of covalent character. Clearly, charge transfer occurs on Th-M bond formation, however the orbital term most likely represents a strong charge rearrangement in the fragments due to the interaction. Finally the spin-orbit-ZORA calculation shows the possible NIR emission induced by the [FeCp(CO)2]- chromophore accomplishing the antenna effect that justifies the sensitization of the actinide complexes.

Original languageEnglish
Pages (from-to)20004-20010
Number of pages7
JournalDalton Transactions
Volume44
Issue number46
DOIs
Publication statusPublished - 2015

ASJC Scopus subject areas

  • Inorganic Chemistry

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