(BETS)2[RuX5NO] (X = Cl, Br): An Explanation of Different Conductive Properties Through Structural and Spectroscopic Studies

(BETS)2[RuX5NO] (X=Cl, Br) exhibit an identical 2:1 stoichiometry. However, while the chlorine derivative shows an insulating behavior, the bromine behaves as a semiconductor with very small activation energy (0.03 eV). The different electrical behaviors are analyzed through the use of a detailed study of structural data and analysis of Raman spectra