
%0 Journal Article
%A Baldas, J 
%A Bonnyman, J 
%A Williams, GA 
%T Structural studies of Technetium Complexes. VIII. The Crystal Structure of Tetraphenylarsonium Tetrabromonitridotechnetate(VI)
%J Australian Journal of Chemistry
%D 1985/01/01
%V 38
%N 1
%P 215-219
%K 
%R https://doi.org/10.1071/CH9850215
%U https://www.publish.csiro.au/paper/CH9850215 
%X The crystal structure of [AsPh4] [TcNBr4] has been determined by single- crystal X-ray diffraction methods at 20±1&#176;C. Crystals are tetragonal, space group P4/n, with a 12.875(2), c 7.992(1)&#506;, and Z 2. Full-matrix least-squares refinement gave a final R value of 0.039 for 1263 independent reflections. The compound is isostructural with the series [AsPh4] [MNBr4] (M = Mo, Ru , Re or Os) and [AsPh4] [MNCl4](M = Mo, Tc , Ru, Re or Os), and with [AsPh4] [OsNI4] and [AsPh4]- [MOCl4](M = Mo or Re). The [TcNBr4]- anion in [AsPh4] [TcNBr4] possesses C4v symmetry with Br- Tc -Br bond angles of 87.08(1) and 153.91(4)&#176;, and N= Tc -Br bond angles of 103.04(2)&#176;. The Tc&#8801;N bond distance is 1.596(6)&#506;, and the Tc - Br distances are 2.4816(5)&#506;. 
