711027-94-0Relevant academic research and scientific papers
Syntheses and molecular structures of some compounds containing many-atom chains end-capped by tricobalt carbonyl clusters
Bruce, Michael I.,Zaitseva, Natasha N.,Nicholson, Brian K.,Skelton, Brian W.,White, Allan H.
, p. 2887 - 2897 (2008/12/20)
Several complexes containing Co3 carbonyl clusters end-capping carbon chains of various lengths are described. Pd(0)/Cu(I)-catalysed reactions between {Co3{μ3-C(C{triple bond, long}C)2Au(PPh3)}(μ-dppm)(CO)7 and I(C{triple bond, long}C)2SiMe3 or FcC{triple bond, long}CI gave {Co3{μ3-C(C{triple bond, long}C)xR}(μ-dppm)(CO)7 [x = 4, R = SiMe3 3; x = 3, R = Fc 8]; treatment of 3 with NaOMe and AuCl(PPh3) gave 4 [x = 4, R = Au(PPh3)]. Related preparations of Co3{μ3-C(C{triple bond, long}C)2[Ru(PP)Cp′]}(μ-dppm)n(CO)9-2n [PP = (PPh3)2, Cp' = Cp, n = 1, 5; PP = dppe, Cp′ = Cp*, n = 1, 6; 0, 7] are also described. Syntheses of bis-cluster complexes {Co3(μ-dppm)(CO)7}2(μ-Cx) (x = 14, 12; 16, 9; 18, 11; 26, 10) - the latter being the longest cluster-capped Cx chains so far described - and the mercury-bridged compounds Hg{(C{triple bond, long}C)xC[Co3(μ-dppm)(CO)7]}2 (x = 1, 13; 2, 14) are reported. The molecular structures of 7, 12, 13 and 14, as well as of Co3(μ3-CC{triple bond, long}CSiMe3)(μ-dppm)(CO)6(PPh3) (15) and Co3{μ3-CC(O)OEt}(μ-dppm)(CO)7 (16), are reported.
