
TY  - JOUR
A1  - Baldas, J 
A1  - Bonnyman, J 
A1  - Williams, GA 
T1  - Structural studies of Technetium Complexes. VIII. The Crystal Structure of Tetraphenylarsonium Tetrabromonitridotechnetate(VI)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1985
VL  - 38
IS  - 1
SP  - 215
EP  - 219
KW  - 
UR  - https://doi.org/10.1071/CH9850215 
N2  - 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;. 
ER  -

