Heteroleptic Square Planar Cobalt(I/II) Complexes

Yafei Gao, Wei Tsung Lee, Veronica Carta, Chun Hsing Chen, Joshua Telser, Jeremy M. Smith

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)


Reduction of the cobalt(II) chloride complex, Ph2B(tBuIm)2Co(THF)Cl (1) in the presence of tBuN≡C affords the diamagnetic, square planar cobalt(I) complex Ph2B(tBuIm)2Co(C≡NtBu)2 (2). This is a rare example of a 16-electron cobalt(I) complex that is structurally related to square planar noble metal complexes. Accordingly, the electronic structure of 2, as calculated by DFT, reveals that the HOMO is largely dz2 in character. Complex 2 is readily oxidized to its cobalt(II) congener [Ph2B(tBuIm)2Co(C=NtBu)2]BPh4 (3-BPh4), whose EPR spectral parameters are characteristic of low-spin d7 with an unpaired electron in an orbital of dz2 parentage. This is also consistent with the results of DFT calculations. Despite its 16-electron configuration and the dz2 parentage of the HOMO, the only tractable reactions of 2 involve one electron oxidation to afford 3.

期刊European Journal of Inorganic Chemistry
出版狀態已出版 - 9 3月 2023


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