SYNTHESIS, THERMAL AND ELECTRICAL CHARACTERIZATION OF 2-METHYLPENTANE-1,5-DIAMMONIUM TETRACHLOROCADMATE(II) WITH PEROVSKITE-LIKE STRUCTURE

This paper reports the synthesis and the structural, thermal and elect rical characterization of the 2-methyl-pentane-1,5-diammonium bidimens ional chlorocadmate(II) system with perovskite-like structure. Its str ucture consists of layers of CdCl6 corner-sharing octahedra extending in the ab plane. Interposed sheets of organic dications link adjacent layers through hydrogen bonding and contribute to the crystal packing. The presence of a methyl group on the C(4) atom of the organic chain is considered responsible for the thermal stability of the compound be tween room and melting temperature (605 K). The compound behaves as an electrical insulator at low temperature approaching semiconducting va lues at higher temperature. These results are also compared with those found for other structurally similar compounds.