The role of the [CpM(CO)2]− chromophore in the optical properties of the [Cp2ThMCp(CO)2]+ complexes, where M = Fe, Ru and Os1 . A theoretical view. Issue 46 (2nd November 2015)

• Record Type: Journal Article
• Authors: Cantero-López, Plinio; Le Bras, Laura; Páez-Hernández, Dayán; Arratia-Pérez, Ramiro
• Is Part Of: Dalton transactions. Volume 44:Issue 46(2015)
• Page Start: 20004
• Page End: 20010
• Publication Date: 2015-11-02
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt03121d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : SO-TDDFT calculations shows that transition metals sensitize the emission of Th ion in the present unsupported complexes. 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 [Cp2 ThMCp(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.