Synthesis, Mesomorphic and Molar Conductivity Studies of some Macrocyclic Phthalocyanine Palladium (II)

Abstract

Two series of Macrocyclic Phthalocyanine Palladium(II) namely 4,4,4,4-R_nPcPd and 3,3,3,3-R_nPcPd were prepared and characterized. The mesomorphic investigation by hot stage polarizing microscope for these series was carried out. This investigation revealed that the 4,4,4,4-R_nPcPd series exhibited columner mesophases while the second series 3,3,3,3-R_nPcPd did not show any liquid crystalline properties.The molar conductivity measurments carried out in dimethyl sulfoxide and N,N-dimethyl formamide solvents for all prepared compounds at room temperature indicate that these compounds behave as weak electrolytes .

Keywords: Macrocyclic compounds, Macrocyclic complexes, Liquid Crystals, Conductivity.