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Abstract
In order to study the influence of the molecular position of the polar group on the liquid crystal behaviour of palladium containing complexes, four series of complexes of the type Pd2(μ - Y)2{p-X-C6H3-CH = N-C6H4-OC8H17}2 and Pd2(μ - Y)2{p-C8H17O-C6H3-CH = N-C6H4-X}2; X:-H, -CH3,-OCH3, -Cl, -NO2, -CN and Y: -OOC.CH3, -Cl have been synthesized. A comparative study has revealed that the rigid central core is mainly responsible for the mesogenic behaviour of these complexes (acetato-bridged compounds do not form liquid crystals) and the polar group position only modifies this behaviour slightly. However, it has been observed that the nature of the anilinic ring substituent has a significant influence on the mesogenic properties of the chloro-bridged complexes.
