Rational synthesis of tricobalt-molybdenum and -tungsten butterfly clusters with alkyne ligands
摘要:
The heterometallic alkyne complexes [CoM(mu-R(1)Cequivalent toCR(2))(CO)(5)Cp] (M = Mo, W; R-1 = R-2 = CO2Me, CO2Et; R-1 = H, R-2 = CO2Me) react with dicobalt octacarbonyl in refluxing toluene to give the 60-electron tetranuclear clusters [Co3M(mu(4)-(RC2R2)-C-1 2)(CO)(9)Cp] in moderate to good yields. The clusters consist of a butterfly-type metal core in which the molybdenum (or tungsten) atom occupies a wing-tip position, as shown by X-ray analysis of three of the complexes. (C) 2002 Elsevier Science B.V. All rights reserved.
Rational synthesis of tricobalt-molybdenum and -tungsten butterfly clusters with alkyne ligands
摘要:
The heterometallic alkyne complexes [CoM(mu-R(1)Cequivalent toCR(2))(CO)(5)Cp] (M = Mo, W; R-1 = R-2 = CO2Me, CO2Et; R-1 = H, R-2 = CO2Me) react with dicobalt octacarbonyl in refluxing toluene to give the 60-electron tetranuclear clusters [Co3M(mu(4)-(RC2R2)-C-1 2)(CO)(9)Cp] in moderate to good yields. The clusters consist of a butterfly-type metal core in which the molybdenum (or tungsten) atom occupies a wing-tip position, as shown by X-ray analysis of three of the complexes. (C) 2002 Elsevier Science B.V. All rights reserved.