X-RAY-INVESTIGATIONS ON A HOMOLOGOUS SERIES OF MESOGENIC AZO-COMPOUNDS COMPLEXED WITH PALLADIUM .2.

The X-ray diffraction experimental data concerning a homologous series of p-alkyl-p'-alkoxy-azobenzene cyclopalladated chloro-bridged dimers , both as powder and monodomain samples, are reported. These results, compared with those obtained for the parent non-metallated materials, suggest a model for the molecular arrangement wherein the alkoxy and a lkyl chains are roughly coplanar with the palladium-containing rigid c ore and, depending on the chain length, bent towards each other.