摘要
The cis-[Mn(CO) 4 (TePh) 2 ] - , similar to bidentate ligand PhTe(CH 2 ) 3 , acts as a "chelating metalloligand" for the synthesis of metallic tellurolate compounds. The reaction of cis-[Mn(CO) 4 (TePh) 2 ] - with BrMn(CO) 5 in THF leads to a mixture of products [(CO) 3 BrMn(μ-TePh) 2 Mn(CO) 4 ] - (1) and Mn 2 (μ-TePh) 2 (CO) 8 (2). Complex 1 crystallizes in the triclinic space group P1̄ with a = 11.309(3) Å, b = 14.780(5) Å, c = 19.212(6) Å, α = 76.05(3)° β = 72.31(3)°, γ = 70.41(3)°, V = 2848(2) Å 3 , Z = 2. Final R = 0.034 and R w = 0.035 resulting from refinement of 10021 total reflections with 677 parameters. Dropwise addition of (MeTe) 2 to a solution of [Me 3 O][BF 4 ] in CH 3 CN leads to formation of [Me 2 TeTeMe][BF 4 ], a potential MeTe + donor ligand. In contrast to oxidative addition of diphenyl ditelluride to [Mn(CO) 5 ] - to give cis-[Mn(CO) 4 (TePh) 2 ] - which was thermally transformed into [(CO) 3 Mn(μ-TePh) 3 Mn(CO) 3 ] - , reaction of [Mn(CO) 5 ] - with [Me 2 TeTeMe] + proceeded to give the monomeric species MeTeMn(CO) 5 as initial product which was then dimerized into Mn 2 (μ-TeMe) 2 (CO) 8 (4).