The first examples of germanium tetrafluoride and tin tetrafluoride complexes with soft thioether coordination--synthesis, properties and crystal structures |
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Authors: | Davis Martin F Levason William Reid Gillian Webster Michael Zhang Wenjian |
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Institution: | School of Chemistry, University of Southampton, Southampton, UK SO17 1BJ. |
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Abstract: | The first thioether complexes of the hard Lewis acidic GeF(4) and SnF(4) have been prepared by reaction of GeF(4)(MeCN)(2)] or SnF(4)(MeCN)(2)] respectively with the thioether ligand in rigorously anhydrous CH(2)Cl(2) solution. The isolated compounds were characterised spectroscopically (IR, (1)H and (19)F{(1)H} NMR) and by microanalyses. Crystal structures of four representative examples, GeF(4){MeS(CH(2))(2)SMe}], GeF(4){EtS(CH(2))(2)SEt}], SnF(4){EtS(CH(2))(2)SEt}] and SnF(4){(i)PrS(CH(2))(2)S(i)Pr}], reveal distorted octahedral adducts with chelating thioethers, and weak, secondary Ge-S and Sn-S bonds. These compounds are the first reported examples of thioether complexes with any main group metal/metalloid fluoride acceptor. |
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