Stable Silver Complexes with C<inf>2</inf>B<inf>9</inf>H<inf>12</inf>- Derivatives

Francesc Teixidor, José A. Ayllón, Clara Viñas, Raikko Kivekäs, Reijo Sillanpää, Jaume Casabó

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23 Citations (Scopus)


The reaction of 7,8-dithio-7,8-dicarba-nido-undecaborate(1-) (Ls2c- and Ls2n-) and 7-thio-8-methyl-7,8-dicarba-nido-undecaborate(1-) (Ls1-) derivatives with Ag+ and Lewis base, PPh3 or bipy, yields white stable solids with the stoichiometries [Ag(Ls2n)(Lewis)], [Ag(Ls2c)(Lewis)], and [Ag(Ls1)(Lewis)], respectively. The stoichiometry is independent of the length of the S,S′-connected strings in Ls2c- complexes. When the S,S′ connected string contains a possible coordinating element such as oxygen, the extra coordinating ligand, a Lewis base, is not required. Crystal structure data for [Ag(Ls2c15)]: mol wt 463.6; space group Pna21; Z = 4; a = 14.0211(7) Å, b = 16.658(8) Å, c = 8.196(3) Å, β = 90.0°; Rw(Fo) = 0.038. Crystal structure data for [Ag(Ls2c6)(PPh3)]·0,5CH2Cl2: mol wt 636.2; space group P21/n; Z = 4; a = 13.069(3) Å, b = 17.414(5) Å, c = 13.545(4) Å, β = 110.32(2)°; Rw(Fo) = 0.034. In most of the crystal structures the sulfur atoms bridge two silver ions. However, the two S-Ag interactions are not equivalent, with a longer and a shorter S-Ag bond. The usual distances are Ag(1)-S(1) = 2.558(3) Å and Ag(1)-S(2) = 2.711(3) Å (Ls2c6-, {7,8-μ-(SCH2CH2S)-7,8-C2B9H10}-; Ls2c15-; {7,8-μ-(SCH2CH2OCH2CH2OCH2CH2OCH2CH2S)-7,8-C2B9H10}-). © 1994, American Chemical Society. All rights reserved.
Original languageEnglish
Pages (from-to)1756-1761
JournalInorganic Chemistry
Issue number9
Publication statusPublished - 1 Apr 1994

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