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2005
Tungsten
I 5700
23- 022
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. — Yields of
the synthesized compounds (II), (III), and (IV) are given in g. The compounds are characterized by low-temperature Raman spectroscopy and quantum chemical calculations
at the MP2 and B3LYP levels of theory. Compound (IIa) crystallizes in the trigonal
space group P3 with Z = 2 and contains isolated W(N3)6 molecules. The structure of
W(N3)6 is only slightly distorted from perfect S6 symmetry. (IVb) crystallizes in the triclinic space group P1 with Z = 2 (single crystal XRD). — (HAIGES*, R.; BOATZ, J.
A.; BAU, R.; SCHNEIDER, S.; SCHROER, T.; YOUSUFUDDIN, M.; CHRISTE, K.
O.; Angew. Chem., Int. Ed. 44 (2005) 12, 1860-1865; Loker Hydrocarbon Res. Inst.,
Dep. Chem., Univ. South. Calif., Los Angeles, CA 90089, USA; Eng.) —
W. Pewestorf
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