60528-58-7

Upstream product

• 879-05-0 2,3,4,5,6-pentafluorophenylmagnesium bromide 
• 108-88-3 toluene 
• 86197-44-6 bis(pentafluorophenyl)(η6-anisole)cobalt(II) 
• 6782-80-5 pentachlorophenyllithium 

Downstream Products

• 86197-42-4 bis(pentafluorophenyl)(η6-benzene-d6)cobalt(II) 
• 108-88-3 toluene 
• 30123-12-7 pentafluorophenyl silver(I) 
• 89377-44-6 tricarbonyl bis(pentafluorophenyl)cobalt 
• 71589-04-3 bis(pentafluorophenyl)bis(tetrahydrofuran)cobalt(II) 
• 86197-38-8 bis(pentafluorophenyl)bis(pyridine)cobalt(II) 
• 363-72-4 Pentafluorobenzene 
• 434-90-2 decafluorobiphenyl 
• 7440-48-4 cobalt 
• 86197-39-9 (2,2'-bipyridine)bis(pentafluorophenyl)cobalt(II) 
• 86197-37-7 bis(pentafluorophenyl)bis(tetrahydrothiophene)cobalt(II) 

Relevant academic research and scientific papers

Synthesis of (η6-arene)NIR2 and CoR2 (R = σ-bound halosilanes and haloarenes) by (allyl)2Ni/HR reactions and combined metal trifluoroacetate/grignard reagent methods

Conventional solution methods, rather than metal atom/vapor methods, have been devised for synthesis of (η6-arene)MR2, where M = Co and Ni and R = SiF3, SiCl3, SiCl2Me, C6F5, C6F4H, and C6Cl5. The halosilane derivatives as well as polymeric Ni(SC6F5)2 and Ni(OC6F5)2 were prepared by reaction of HSiF3, HSiCl3, HSiCl2Me, HOC6F5, and HSC6F5 with (2-methylallyl)2Ni in arene solvents. A different approach was necessary for the R = haloaryl derivatives. Such a sequence involved preparation of (CF3CO2)2Ni from CF3COOAg followed by reaction with C6Cl5Li to form (C6Cl5)2Ni etherate which was converted to (C6Cl5)2Ni(η6-arene) by reaction with an arene/BF3 mixture (although simply heating with the arene worked with some systems). This method allowed more convenient syntheses of known (η6-arene)MR2 complexes and, for the first time, synthesis of the C6F4H and C6Cl5 derivatives.

Complexes of (C6F5)2Co and (C6F5)2Ni. Synthesis of (η6-arene)bis(pentafluorophenyl)cobalt(II) using cobalt atoms. Reactions, η6-arene lability, and use in synthesis of tetrahedral (C6F5)2Co(L)2

The high lability of the η6-arene ligand in (C6F6)2Co(η6-arene) has been used to advantage to prepare new (C6F5)2Co(L)2 and (C6F5)2Co(L-L) complexes (L = tetrahydrofuran, tetrahydrothiophene, and pyridine and L-L = bipyridine). According to spectral and magnetic data these are tetrahedral compounds. Similar π-arene displacements on (C6F5)2Ni(η6-arene) have yielded square-planar trans-(C6F5)2Ni(L)2 and square-planar cis-(C6F6)2Ni(L-L). The starting cobalt-arene complex induced the polymerization of norbornadiene and propyne. Thermolysis of the starting complex led to free radical decomposition, which is contrasted by nonradical reductive coupling with the nickel analogue. η6-Arene-exchange equilibria for the cobalt- and nickel-arene complexes indicated the order of preference for η6-arenes as mesitylene > toluene > benzene > anisole for cobalt and mesitylene > toluene ≈ anisole > benzene for nickel. A literature background regarding monoarene complexes is presented.