The preparation of copper(II) and copper(I) salts in acetonitrile using group VA and VB pentafluorides |
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| Authors: | Allan C Baxter James H Cameron Alexander McAuley Fiona M McLaren John M Winfield |
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| Institution: | Chemistry Department, University of Glasgow, Glasgow, G12 8QQ, Scotland |
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| Abstract: | Copper(II) fluorine reacts with the pentafluorides, TaF5, PF5, and AsF5, in acetonitrile to give solvated CuII, hexafluoroanion salts. These react with copper metal to give the corresponding CuI compounds. Similar reactions occur between AsF5 and silver(I) or thallium(I) fluorides, but silver(II) fluoride reacts with MeCN, and AgI hexafluoroarsenate is formed. PF5 oxidises Cu slowly in MeCN to give CuI hexafluorophosphate, but AsF5 has no oxidising ability towards metals in MeCN. Spectroscopic data for Cu(MF6)2·5MeCN and Cu(MF6)·4MeCN (M = Ta or P) are discussed. |
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