Abstract
The first thermotrophic organometallic discogen is synthesized: the bis(p-n-decyl benzoyl) methanato copper (II) These molecules having a 2/m symmetry form a stable discophase with binary or tetragonal symmetry. An intermediate of the synthesis. the bis(p-n décyl benzoyl) methane has an optically biaxial stable mesophase: the clearing enthalpy is greater than he melting enthalpy.