Showing papers by "Edinburgh Napier University published in 1988"

The Synthesis, Polymerization and Second Order Non-Linear Optical Properties of Novel, Conjugated, Unsymmetrical Diacetylenes Showing Liquid Crystal Behaviour

Abstract: A number of novel, conjugated, unsymmetrically disubstituted diphenyl-diacetylenes have been synthesized and polymerized in the liquid-crystalline phase to yield liquid-crystalline polymers. The efficiency of second harmonic generation is reported for both monomers and polymers.

The Crystal Structure of 1,6-Diamino-1,1,6,6-tetramethyl-2,4-hexadiyne and Studies of its Complexes with Cobalt(II), Nickel(II) and Copper(II)

Abstract: The diacetylene 1,6-diamino-1,1,6,6-tetramethyl-2,4-hexadiyne has been prepared from 1,1-dimethyl propargylamine and a complete structure determination has been carried out. Some new compounds of 1,6-diamino-1,1,6,6-tetramethyl-2,4-hexadiyne with cobalt, nickel and copper have been prepared. The compounds have been characterised by analysis, magnetic moments, vibrational and electronic spectra. The thiocyanate compound of cobalt and the chloro-compounds of nickel and copper were found to have octahedral-based structures. The chloro-compound of cobalt has a tetrahedral structure.