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- Title
A Low‐Spin Three‐Coordinate Cobalt(I) Complex and Its Reactivity toward H<sub>2</sub> and Silane.
- Authors
Choi, Jonghoon; Lee, Yunho
- Abstract
A three‐coordinate low‐spin cobalt(I) complex generated using a pincer ligand is presented. Since an empty dx2-y2 orbital is sterically exposed at the site trans to the N donor of an acridane moiety, the cobalt(I) center accepts the coordination of various donors such as H2 and PhSiH3 revealing σ‐complex formation. At this low‐spin cobalt(I) site, homolysis of H–H and Si−H bonds preferentially occurs via bimolecular hydrogen atom transfer instead of two‐electron oxidative addition. When the resulting CoII–H species was exposed to N2, H2 evolution readily occurs at ambient conditions. These results suggest single‐electron processes are favored at the structurally rigidified cobalt center.
- Subjects
COBALT; SILANE; REACTIVITY (Chemistry); HYDROGEN atom; OXIDATIVE addition
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 21, p7012
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201901007