Spectroscopic Manifestations and Implications for Catalysis of Quasi-d¹⁰ Configurations in Formal Gold(III) Complexes.

ABSTRACT: Several gold +I and +III complexes are investigated computationally and spectroscopically, focusing on the d-configuration and physical oxidation state of the metal center. Density functional theory calculations reveal the non-negligible electron-sharing covalent character of the metal-to-ligand σ-bonding framework. The bonding of gold(III) is shown to be isoelectronic to the formal Cu^III complex [Cu(CF₃ )₄ ]^1- , in which the metal center tries to populate its formally unoccupied 3d_x2-y2 orbital via σ-bonding, leading to a reduced d¹⁰ Cu^I description. However, Au L₃ -edge X-ray absorption spectroscopy reveals excitation into the d-orbital of the Au^III species is still possible, showing that a

SUBMITTER: Trifonova EA 

PROVIDER: S-EPMC10107628 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature