The Molybdenum(V) and Tungsten(VI) Oxoazides [MoO(N3)3], [MoO(N3)3⋅2 CH3CN], [(bipy)MoO(N3)3], [MoO(N3)5]2−, [WO(N3)4], and [WO(N3)4⋅CH3CN] |
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| Authors: | Prof?Dr Ralf Haiges Juri Skotnitzki Zongtang Fang Prof?Dr David A Dixon Prof?Dr Karl O Christe |
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| Institution: | 1. Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089‐1661 (USA);2. Department of Chemistry, The University of Alabama, Tuscaloosa, AL 35487 (USA) |
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| Abstract: | A series of novel molybdenum(V) and tungsten(VI) oxoazides was prepared starting from MOF4] (M=Mo, W) and Me3SiN3. While WO(N3)4] was formed through fluoride–azide exchange in the reaction of Me3SiN3 with WOF4 in SO2 solution, the reaction with MoOF4 resulted in a reduction of MoVI to MoV and formation of MoO(N3)3]. Carried out in acetonitrile solution, these reactions resulted in the isolation of the corresponding adducts MoO(N3)3?2 CH3CN] and WO(N3)4?CH3CN]. Subsequent reactions of MoO(N3)3] with 2,2′‐bipyridine and PPh4]N3] resulted in the formation and isolation of (bipy)MoO(N3)3] and PPh4]2MoO(N3)5], respectively. Most molybdenum(V) and tungsten(VI) oxoazides were fully characterized by their vibrational spectra, impact, friction and thermal sensitivity data and, in the case of WO(N3)4?CH3CN], (bipy)MoO(N3)3], and PPh4]2MoO(N3)5], by their X‐ray crystal structures. |
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| Keywords: | crystal structures molybdenum oxoazides polyazides tungsten |
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