- Catalysis with Pnictogen, Chalcogen, and Halogen Bonds
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Halogen- and chalcogen-based σ-hole interactions have recently received increased interest in non-covalent organocatalysis. However, the closely related pnictogen bonds have been neglected. In this study, we introduce conceptually simple, neutral, and mon
- Benz, Sebastian,Poblador-Bahamonde, Amalia I.,Low-Ders, Nicolas,Matile, Stefan
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supporting information
p. 5408 - 5412
(2018/03/23)
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- Syntheses and properties of tetrakis(pentafluorophenyl)tellurium, Te(C6F5)4, and related compounds - (See abstract)
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Te(C6F5)4 was prepared from the reactions of TeCl4 or Te(C6F5)2Cl2 with Grignard reagents or AgC6F5 in moderate to good yields. Substitution reactions with Me3SiX (X = Cl, Br, OSO2CF3), with equimolar amounts of Br2, with AgNO3 and with H[BF4] or BF3·OEt2 yielded the Te(C6F5)3X derivatives (X = Cl, Br, OSO2CF3, NO3, BF4). Oxidation reactions of Cd, Hg, and Pd0 complexes led to Te(C6F5)2 and the corresponding bis(pentafluorophenyl) derivatives M(C6F5)2 (M = Cd, Hg, Pd) and with InBr to In(C6F5)2Br. From very slow hydrolysis of Te(C6F5)4 the oxide Te(C6F5)2O was prepared. The thermal decomposition, the NMR and mass spectra of the partially new compounds are discussed. The crystal structures of Te(C6F5)3Br (monoclinic, P21/a, Z = 4), [Te(C6F5)3][OSO2CF3] (monoclinic, P21/n, Z = 16) and [Te(C6F5)2O]2 (triclinic, P1, Z = 2) were determined.
- Naumann, Dieter,Tyrra, Wieland,Herrmann, Rudolf,Pantenburg, Ingo,Wickleder, Mathias S.
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p. 833 - 842
(2008/10/08)
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- Oxidative perfluoroorganylation methods in group 12-16 chemistry: The reactions of haloperfluoroorganics and In and InBr, a convenient new route to AgRf (Rf = CF3, C6F5) and reactions of AgRf
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Perfluoroiodo organics RfI (Rf = n-CnF2n+1 (n = 1, 2, 3, 4, 6), i-C3F7, C6F5) and C6F5Br react with elemental indium in polyethers or THF to give
- Tyrra
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p. 149 - 152
(2007/10/03)
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- The reactivity of perfluoroaryltellurium(IV) dihalides towards cyanide, crystal structures of (C6F5)3TeCl and C6F5TeTeC6F5
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The reactivity of R2TeHal2 (R=C6F5, 4-CF3C6F4; Hal=F, Cl, Br) towards AgCN and Me3SiCN was examined. The perfluoroaryl substituted tellurium(IV) difluorides reacted wi
- Klap?tke, Thomas M.,Krumm, Burkhard,Mayer, Peter,Polborn, Kurt,Ruscitti, Oliver P.
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p. 207 - 212
(2007/10/03)
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- Sodium telluride in N-methyl-2-pyrrolidone: An efficient telluration system for the synthesis of aromatic tellurides and ditellurides
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Sodium telluride prepared in situ from tellurium and sodium hydride in N-methyl-2-pyrrolidone was found to act as an efficient tellurating agent for nonactivated aromatic iodides, providing a simple route to a variety of diaryl tellurides, alkyl aryl tellurides and diaryl ditellurides.
- Suzuki,Nakamura
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p. 549 - 551
(2007/10/02)
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- Organothallium compounds. VI. Reactions of bromobis(pentafluorophenyl)thallium(III) with main group elements
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Bromobis(pentafluorophenyl)thallium(IlI) reacts with many main group elements on heating in the absence of a solvent to give pentafluorophenyl derivatsves of these elements. The compounds C6F5M (M = Cl, Br, or I), (C6F5)2M (M = Zn, Cd, Hg, S, Se or Te), (C6F5)3M (M = In, P, As, or Sb), and (C6F5)M (M = Ge or Sn) have been prepared by this method. Substantial decomposition of (C6F5)2TlBr occurs on reaction with aluminium, gallium, lead and bismuth, but pcntafluorophenyl derivatives of these elements are not obtained.
- Deacon,Parrott
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p. 287 - 295
(2008/10/08)
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