Organometallic complexes containing metals in formally negative oxidation states (metallates) have been an active research area since the early nineteen hundreds. Despite this, there is a surprising dearth of electronically unsaturated metallates in the literature. Utilizing the p-acidic, m-terphenyl isocyanide CNArDipp2, we have synthesized and isolated the first examples of unsaturated metal complexes in a formally negative oxidation state; three coordinate complexes, K[M(CNArDipp2)3] (M=Co, Rh and Ir). This project outlines the differences in their electronic structures and the ability of these molecules to act as potent Lewis bases, forming reverse dative interactions with thallium. Furthermore, oxidative addition products of the rhodium complex along with the results of its protonation are presented.

Structure and Reactivity of Group IX Three-Coordinate Monoanions

2019 Fall National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.