| Abstract |
[(n-Bu)(4)N](2) [Au(dcbdt)(2)](5) was obtained as brown thin plate shaped crystals by electrochemical oxidation of (n-Bu)(4)N [Au(dcbdt)(2)], a Au complex with 4,5-dicyanobenzene-1,2-dithiolate (dcbdt) recently prepared. Cyclic voltammetry and optical spectroscopy studies indicate a mixed valence state. The crystal structure is triclinic and presents slightly pentamerised segregated stacks of the complex along (1,2,0). Single crystal electrical conductivity (sigma (RT)similar to 10 S/cm, Ea=13.5 meV) and thermopower measurements (S-RT=-6 mu V/K) suggest a degenerate semiconducting behaviour. The static susceptibility measurements give an almost temperature independent paramagnetic value of 3.5x10(-4) emu/mol. These and EPR results are discussed in relation to the crystal structure. |
