| Literature DB >> 33830763 |
Mary C Eaton1, Vincent J Catalano2, Jason Shearer3, Leslie J Murray1.
Abstract
Reduction of a tricobalt(II) tri(bromide) cluster supported by a tris(β-diketiminate) cyclophane results in halide loss, ligand compression, and metal-metal bond formation to yield a 48-electron CoI3 cluster, Co3LEt/Me (2). Upon reaction of 2 with dinitrogen, all metal-metal bonds are broken, steric conflicts are relaxed, and dinitrogen is incorporated within the internal cavity to yield a formally (μ3-η1:η2:η1-dinitrogen)tricobalt(I) complex, 3. Broken symmetry DFT calculations (PBE0/def2-tzvp/D3) support an N-N bond order of 2.1 in the bound N2 with the calculated N-N stretching frequency (1743 cm-1) comparable to the experimental value (1752 cm-1). Reduction of 3 under Ar in the presence of Me3SiBr results in N2 scission with tris(trimethylsilyl)amine afforded in good yield.Entities:
Year: 2021 PMID: 33830763 PMCID: PMC8247452 DOI: 10.1021/jacs.1c01840
Source DB: PubMed Journal: J Am Chem Soc ISSN: 0002-7863 Impact factor: 15.419