Polyazide Chemistry: The First Binary Group 6 Azides, Mo(N3)6, W(N3)6, [Mo(N3)7]−, and [W(N3)7]−, and the [NW(N3)4]− and [NMo(N3)4]− Ions

Abstract

Bang on target: The highly explosive Group 6 azides Mo(N3)6 and W(N3)6 are prepared by the reaction of Me3SiN3 with MoF6 and WF6, respectively. The structure of W(N3)6 has perfect rhombohedral C3 symmetry (see picture). The reaction of Mo(N3)6 and W(N3)6 with ionic azides leads to the formation of [Mo(N3)7]− and [W(N3)7]−, respectively, the first binary heptaazides. Controlled decomposition of these anions produces [NMo(N3)4]− and [NW(N3)4]−.

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