Synthesis and crystal structure of [EDA][Ni(dmit)(2)](3)

The crystal structure of the compound [EDA] [Ni(dmit)(2)](3) (EDA = 2-dieth ylamino-1,3-dithioanylium; dmit = 1,3-dithiole-2-thione-4,5-dithiolate) C25 H14NNi3S32, has been determined by single crystal X-ray diffraction at 300K . The crystal is triclinic with space group P (1) over bar, a = 11. 252, b = 12.192(2), c = 20.055(6) Angstrom, alpha = 108.127(2), beta = 106.281(8), gamma = 90.005(9)degrees; V = 2498.3(3) Angstrom(3), Z = 2, M-r = 1530.38, D-c = 2.03(2) g/cm(3). Final R and R-w values were 0.0603 and 0.0104, resp ectively. The structure consists of thick layers of stacked Ni(dmit)(2) ent ities separated by EDA cations. This salt shows semiconducting behaviour wi th room temperature conductivity of 0.2 Scm(-1) and activation energy of 0. 11 eV.