SYNTHESIS AND CHARACTERIZATION OF (ISOTRITHIONEDITHIOLATO-S,S')NITRIDOTECHNETATE(V), (BU4N)(2)[TCN(DMIT)(2)]

(Bu4N)(2)[TcN(dmit)(2)] (dmit(2-) = isotrithionedithiolate) was prepar ed from Na(2)dmit, (Bu4N)[TcNCl4] and (Bu4N)Cl in acetonitrile. The co mpound crystallises in the monoclinic space group C2/c with a unit cel l of the dimensions a = 23.143(5), b = 8.342(2), c = 26.382(5) Angstro m, beta = 95.12(3), Z = 4. The Tc=N bond distance is comparatively sho rt at 1.615(6) Angstrom. Tc and N(1) are situated on a two-fold crysta llographic axis. The general coordination geometry is a square pyramid with the four sulfur atoms forming the basal plane and the nitrido ni trogen at the apex. The technetium is located 0.62 Angstrom above the plane defined by the four sulphurs.