Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/2327
Title: | Liquid crystalline properties of o-hydroxy substituted Schiff's bases and their copper(II) and palladium(II) complexes |
Authors: | Prasad, Veena Sadashiva, B.K. |
Keywords: | Schiff's bases chelates smectic A smectic C |
Issue Date: | Feb-1993 |
Publisher: | Gordon and Breach Science Publishers. |
Citation: | Molecular Crystals and Liquid Crystals, 1993, Vol.225 , p303-312 |
Abstract: | The synthesis and liquid crystalline properties of thirty nine compounds are reported. These include a homologous series of N-(2-hydroxy-4-n-alkoxybenzylidene)-4''-n-dodecylphenylanilines and their corresponding copper(II) and palladium(II) complexes. Differential scanning calorimetry and optical microscopy were used to characterise the mesophases. The Schiff's bases exhibit polymesomorphism while their metal chelates basically show smectic A (SA) and smectic C (Sc) phases except for a few derivatives. The transition temperatures of the metal chelates are considerably higher than the ligands from which they are derived. A comparison of the mesomorphic properties of the copper chelates with those of bis[4-(4-alkoxybcnzoyloxy)-N-(4-ethoxyphenyl)salicylaldiminato]copper(II) complexes have also been made. Though the melting points of copper(II) and their corresponding palladium(II) chelates of many homologues are comparable, the clearing points of the latter are consistently higher. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/2327 |
ISSN: | 1058-725X |
Alternative Location: | http://dx.doi.org/10.1080/10587259308036236 |
Copyright: | 1993 OPA (Overseas Publishers Association) N.V. |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1993 MCLC V225 p303.pdf Restricted Access | Restricted Access | 398.83 kB | Adobe PDF | View/Open Request a copy |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.