Work

Iridium complexes of a chelating bis(iminoxolene): augmentation of metal–metal π bonding by metal–ligand π bonding

Year: 2026

Type: article

Abstract: -symmetric stereoisomer. The iridium-iridium distance, 2.5584(4) Å, is extremely short for an unsupported iridium-iridium bond. This is attributed to donor-acceptor interactions between filled metal dπ orbitals on one iridium and empty metal-iminoxolene π* orbitals on the other iridium fostering a significant degree of metal-metal π bonding. The dimer can be reduced to a monomeric four-coordinate anion which is alkylated by iodomethane to form a five-coordinate methyliridium complex. In both of these complexes, the ester groups in the bridge are not bound to iridium.

Source: Dalton Transactions

DOI: 10.1039/d5dt02509e

Authors: Kristin D. Grandstaff, Halen Carbonel, Seth N. Brown

Institution: University of Notre Dame

Language: English

Topic: Organometallic Complex Synthesis and Catalysis

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Science Foundation, Division of Chemistry

Awards: High-Valent Tetragonal Late Metal Oxo and Nitrido Complexes, G463103925, MRI: Acquisition of a Dual-Source Single-Crystal X-ray Diffractometer., G7636928439