Title: On the reported mesomorphism of lanthanide complexes containing the hemicyanine structural unit
Authors: Binnemans, Koen ×
Bex, Cindy
Bruce, Duncan W. #
Issue Date: 1999
Publisher: Taylor & francis ltd
Series Title: Liquid crystals vol:26 issue:5 pages:771-774
Abstract: Close examination of the thermal behaviour of the (E)-N-hexadecyl-4-N',N'-dimethylaminostilbazolium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato)lanthanide(III) complexes has revealed that these compounds are not mesomorphic, in contradiction to an earlier report in the literature (K. Z. Wang et al., 1995, Solid State Commun. 95, 223). By replacing the bromide of the hemicyanine precursor (see the scheme) by a tetrakis(beta-diketonato)lanthanide(III) anion, new complexes were synthesized, but none shows a mesophase. Reasons for the absence of mesomorphism are discussed. Transition temperatures for the mesomorphic hemicyanine bromides are reported.
ISSN: 0267-8292
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Design and Synthesis
× corresponding author
# (joint) last author

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