Syntheses and Crystal Structures of new Smido- und Imidobridged Cobalt Clusters: [Li(THF)_2]_3[Co_3(#mu#_2-NHMes)_3Cl_6] (1), [Li(DME)_3]_2[Co_(18)(#mu#_4-NPh)_3(#mu#_3-NPh)_(12)Cl_3] (2), [Li(DME)_3]_2[Co_6(#mu#_4-NPh)(#mu#_2-NPh)_6(PPh_2Et)_2] (3)

摘要

The reactions of cobalt(II)-chloride with the lithium-amides LiNHMes and Li_2NPh leads to an amido-bridged multinuclear complex [Li(THF)_2]_3[Co_3(#mu#_2-NHMes)_3Cl_6] (1) as well as to the imido-bridged cobalt cluster [Li(DME)_3]_2[Co_(18)(#mu#-NPh)_3(#mu#_3-NPh)_(12)Cl_3] (2). In the presence of tertiary phosphines two imido-bridged cobalt clusters [Li(DME)_3]_2[Co_6(#mu#-NPh)(#mu#_2NPh)_6(PPh_2Et)_2] (3) and [Li(THF)_4][Co_8(#mu#_3-NPh)_6(#mu#_2-NPh)_3(PPh_3)_2] (4) result. The structures of 1-4 were characterized by X-ray single crystal structure analysis.