摘要:
The structures of organic metals (DOET)(4)[Hg2Cl6] (1) and (DOET)(4)[Hg2Br6] (2), where DOET is (1,4-dioxanediyl-2,3-dithio)ethylenedithiotetrathiafulvalene, were established by X-ray diffraction analysis. Compounds 1 and 2 are isostructural, and their crystals have layered structures. The conducting layers formed by the stacked DOET1/2+ cations alternate with the layers of the [Hg2X6](2-) anions (X = Cl, Br). The temperature dependence of the conductivity of salt 1 shows a metallic character in the range of 300-4 K. Compound 2 undergoes the metal-semiconductor phase transition (TM-1) at 100 K.