Access to Perfluorometallacyclopentane Complexes of Cobalt through the [(MeCN)4Co(C4F8)][PF6] Precursor

The acetonitrile ligands in [(MeCN)(4)Co(C4F8)]-[PF6] were found to be labile toward ligand substitution reactions, allowing for the preparation of [(MeCN)(tpy)Co(C4F8)][PF6], [(tpy)CoBr(C4F8)], [(bPY)(2)Co(C4F8)][PF6], and [(cis-kappa(2)-pym-PPh2)(2)Co(C-48)][PF6] (tpy = 2,2':6',2 ''-terpyridine, bpy = 2,2'-bipyridine, and pym-PPh2 = diphenyl(2-pyrimidyl)phosphine). All of the aforementioned complexes have been structurally characterized by X-ray diffraction. Additionally, an improved procedure for the preparation of [(MeCN)(4)Co(C4F8)] [X] (X = PF6 or BF4 is reported.

Automated summary

The acetonitrile ligands in [(MeCN)(4)Co(C4F8)]-[PF6] were found to be labile towards ligand substitution reactions, leading to the preparation of new complexes. X-ray diffraction was used to structurally characterize these complexes, and an improved procedure for their preparation was reported.