Mesogenic behaviour of (4-alkoxybenzylideneamino)bromobenzene, (4-alkoxybenzylideneamino)benzenethiols, and thiolatonickel complexes of the thiols

Richard M. Moutloali, James Darkwa, Emmanuel Marfo-Owusu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The synthesis, characterization and mesogenic properties of Schiff base compounds arising from the reaction of 4-alkoxybenzaldehydes with 4-aminothiophenol or 4-bromoaniline are described. Whereas the Schiff base thiol with two benzene rings in the molecule, HSC6H4NC(H)C 6H4OC16H33 (2), is non-mesogenic, the bromo analogue, BrC6H4NC(H)C6H 4OC16H33 (3), is mesogenic. The introduction of a third benzene ring into the molecular architecture of 2 and 3 produced thiol- and bromo-Schiff base compounds, HSC6H4NC(H)C 6H4OC(O)C6H4OC16H 33 and BrC6H4NC(H)C6H 4OC(O)C6H4OC16H33, respectively, that are both mesogenic. The thiol compounds react with nickelocene to form [(η5-C5H5) Ni(μ2-SC6H4NC(H)C6H 4OC16H33)]2 and [(η5- C5H5)Ni(μ2-SC6H 4NC(H)C6H4OC (O)-C6H 4OC16H33)]2, but the nickel complexes are not mesogenic.

Original languageEnglish
Pages (from-to)321-326
Number of pages6
JournalLiquid Crystals
Issue number3
Publication statusPublished - Mar 2006
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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