Tungsten(VI) and Tungsten(V) Fluoride Complexes |
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| Authors: | Said El‐Kurdi Abdal‐Azim Al‐Terkawi Bernd M. Schmidt Anton Dimitrov Dr. Konrad Seppelt Prof. Dr. |
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| Affiliation: | 1. Freie Universit?t Berlin, Institut für Chemie und Biochemie, Fabeckstra?e 34‐36, 14195 Berlin (Germany), Fax: (+49)?030‐838‐54289;2. Humboldt Universit?t zu Berlin, Anorganische und Allgemeine Chemie III, Unter den Linden 6, 10099 Berlin (Germany) |
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| Abstract: | WF6 reacts with phosphines R3P forming 1:1 compounds. With R=P(CH3)3 the coordination around the tungsten atom is capped trigonal prismatic, with R=P(CH3)2C6H5 the coordination is capped octahedral, as established by single‐crystal structure determinations: [(CH3)3P? WF6]: a=752.5(21), b=945.7(24), c=629.8(18) pm. β=110.36(13)°, space group Cm, Z=2; [(CH3)2(C6H5)P? WF6]: a=762.2(2), b=1123.5(2), c=2647.5(6) pm, space group Pbca, Z=8. [(CF3CH2)2N? WF5] reacts smoothly with P(C6H5)3 forming known P(C6H5)3(F)2 and [(CF3CH2)2N? WF4? P(C6H5)3], a stable, green, molecular species, identified among other methods with an crystal structure determination: a=914.9(1), b=956.0(1), c=1449.8(2) pm, α=7.642(4), β=81.648(3), γ=81.519°, space group P$bar 1$ , Z=2. |
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| Keywords: | coordination modes EPR spectroscopy fluorides tungsten Raman spectroscopy |
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