214339-85-2Relevant academic research and scientific papers
New routes toward metallated methanofullerene terdentate bisaminoaryl ligands
Meijer, Michel D,Van Klink, Gerard P.M,De Bruin, Bas,Van Koten, Gerard
, p. 31 - 40 (2002)
The preparation of a series of new ligands, comprising a NCN ligand (C6H2(CH2NMe2)2-2, 6-X-4, X=H, Br, I) substituted on the para position with a [1,2]-methanofullerene group is described. Metallation of these ligands is achieved via an oxidative addition reaction of nickel(0) or palladium(0) complexes. The first step of this reaction comprises the formation of a π-complex between the metal center and the fullerene moiety of the ligand, which upon heating in a subsequent step is followed by oxidative addition of the NCN-halide bond to the metal center. The nickel(II) complex C60-C(Me)-NCN·NiBr (9) was isolated in pure form. Low temperature NMR spectroscopy and theoretical calculations showed that the NCN moiety in 9 rotates about the (Me)C-NCN bond at room temperature. UV-Vis spectroscopic measurements of 9 suggest that binding a metal center via a covalent metal-carbon bond to the NCN moiety does not lead to a substantial change in the electronic structure of the fullerene moiety. The cyclo voltammograms of 9 showed the absence of a Ni(II)/Ni(III) oxidation/reduction process, while the second and fourth C60 reduction potentials were anodically shifted.
New 'bucky-ligands'. Potentially monoanionic terdentate diamino aryl pincer ligands anchored to C60
Meijer, Michel D.,Rump, Mathias,Gossage, Robert A.,Jastrzebski, Johann H.T.B.,Van Koten, Gerard
, p. 6773 - 6776 (2007/10/03)
Two new methanofullerenes have been prepared by the reaction of C60 with diazo substituted, potentially monoanionic, terdentate diamino aryl ligands, yielding a mixture of the open valence [5,6]- and closed valence [6,6]-isomers. Single isomers of the pure [6,6]-methanofullerenes were obtained by heating these mixtures in toluene solution.
