Hydrogen-free analogous of the bis-(ethylenedithiolo)-tetrathiafulvalene (ET) C6S8+2n, n=1, 2 and 3 (C-6, S-10, C6S12, C6S14) were synthesized for the first time using an original method. Thin films of conducting cation-radical salt (CRS) (C6S12)(ClO4)(x) were fabricated using electrochemical method. IR-spectrums and resistance measurements reveal that. the CRS is orgranic metal-like compound which has an unusual transition near 100 K. At this temperature resistance increases about 8 times. Farther decrease of temperature down to 77 K leads to decrease of the resistance.