Browsing by Subject "fluorinated ligands"

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    Gold Complexes with Difunctional Perfluoroalkyl Chains: Quantifying the Energy of Aurophilic Interactions in Flexible Open-Chain Complexes
    (Wiley, 2020-06-22) Gil-Rubio, Juan; Portugués, Alejandro; González, Lydia; Bautista, Delia; Química Inorgánica
    The first dinuclear Au(I) compounds containing bridging (CF2)n chains (n = 4, 6, 8) and Au(III) metallaperfluorocyclopentanes have been obtained by photoinitiated reactions of LAuMe (L = PPh3, PMe3, PCy3 or IPr) with alpha,omega-diiodoperfluorocarbons. Complexes LAu(CF2)4AuL present an unusual looped structure stabilized by an aurophilic interaction for L = PMe3, PPh3 and PCy3. The study of their dynamic behaviour has provided new insights about the strength of aurophilic interactions in solution, allowing quantification of the energy of a single Au···Au interaction
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    Haloperfluorocarbons with Gold(I) Organometallic Complexes. Perfluoroalkyl Gold(I) and Gold(III) Complexes
    (Wiley, 2019-09-04) Portugués, Alejandro; López-García, Inmaculada; Jiménez-Bernad, Javier; Bautista, Delia; Gil-Rubio, Juan; Química Inorgánica
    The study of perfluoroalkyl metal complexes is key to understanding and improving metal-promoted perfluoroalkylation reactions. Herein we report the synthesis of the first gold complexes with primary or secondary perfluoroalkyl ligands by photoinitiated reactions between Au(I) organometallic complexes and iodoperfluoroalkanes. Complexes of the types LAuRF (L = PPh3 or N,N-bis(2,6-diisopropylphenyl)imidazol-2-ylidene; RF = n-C4F9, n-C6F13, i-C3F7, c-C6F11) and [Au(RF)(Ar)I(PPh3)] (Ar = 2,4,6-trimethylphenyl) have been isolated and characterized. Alkynes RFC≡CR were formed by reaction of Ph3PAuC≡CR (R = Ph, nHex) with IRF (RF = n-C4F9, i-C3F7). Evidences of a photoinitiated radical mechanism for these reactions have been obtained. Au(III) complexes [Au(n-C4F9)(X)(Y)L] (X = Y = Cl, Br, I, Me; X = Me, Y = I) have been prepared or in situ generated, and their thermal or photochemical decomposition reactions have been studied