Synthesen und Eigenschaften von Pentafluorethylkupfer(I)‐ und ‐(III)‐Verbindungen: Cu(C2F5) · D, [Cu(C2F5)2]– und (C2F5)2CuSC(S)N(C2H5)2 |
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| Authors: | Dieter Naumann,Thomas Roy,Bernd Caeners,Dirk Hü tten,Karl‐Friedrich Tebbe† ,Theo Gilles |
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| Abstract: | Syntheses and Properties of Pentafluoroethylcopper(I) and ‐copper(III) Compounds: CuC2F5 · D, [Cu(C2F5)2]–, and (C2F5)2CuSC(S)N(C2H5)2 The reactions of Cd(C2F5)2 · D and Zn(C2F5)2 · D (D = 2 CH3CN, 2 DMF), respectively, with copper(I) halides in the presence of halides quantitatively yield the CuC2F5 compounds CuC2F5 · D and [Cu(C2F5)2]–. The CuC2F5 complexes are identified by NMR spectroscopy, while [Cu(C2F5)2]– is isolated as PNP salt (PNP = (C6H5)3PNP(C6H5)3+). Both compounds are excellent C2F5 group transfer reagents, even at low temperature. Oxidation of [Cu(C2F5)2]– with [(C2H5)2NC(S)S]2 yields the crystalline Cu(III) compound (C2F5)2CuSC(S)N(C2H5)2 (monoclinic, C2/c). |
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| Keywords: | Pentafluoroethyl copper compounds Crystal structure |
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