
%0 Journal Article
%A Williams, GA 
%A Baldas, J 
%T Structural Studies of Technetium Complexes. XI. The Crystal Structure of Bis(tetraphenylarsonium) Bis(1,2-dicyanoethenedithiolato)nitridotechnetate(V)
%J Australian Journal of Chemistry
%D 1989/06/01
%V 42
%N 6
%P 875-884
%K 
%R https://doi.org/10.1071/CH9890875
%U https://www.publish.csiro.au/paper/CH9890875 
%X The crystal structure of [AsPh4]2 [ TcN(mnt)2] ( mnt = 1,2-dicyanoethenedithiolate) has been determined by single-crystal X-ray diffraction methods at 21 ± 1 C. Crystals are monoclinic, space group Pn , with a 11 369(2), b 15.530(2), c 14.421(3) Å , P 97.58(2)º, and Z 2. Full-matrix least-squares refinement gave a final R value of 0.057 for 4232 independent reflections. The technetium atom in the [TcN( mnt )2]2- anion has square-pyramidal coordination geometry with the nitrido ligand in the apical position, Tc =N 1.59(1) Å , and four Tc -S bonds with distances varying between 2.367(4) and 2.419(4) Å. The Tc =N core is disordered about a pseudo-inversion centre, but unequal occupancies of the disordered sites preclude a centrosymmetric structure. 
