A COMPOUND (2C) OF A NEW FAMILY OF DISC-LIKE MESOGENS : 2,3,7,8,12,13-HEXAALKANOYLOXYBENZO ( 1,2-B : 3,4-B' : 5,6-B ″ )TRISBENZOFURANS IS DESCRIBED WITH THE PHASE SEQUENCE: K N//D D//O//B//. //D D//R//D D//H//D I. THE D//O//B//. //D PHASEIS THE FIRST EXAMPLE OF A THERMOTROPIC COLUMNAR MESOPHASE WITH AN OBLIQUE BIDIMENSIONAL LATTICE.