Title: Mixed copper - lanthanide metallomesogens
Authors: Binnemans, Koen ×
Lodewyckx, Katleen
Donnio, Bertrand
Guillon, Daniel #
Issue Date: 2002
Publisher: Wiley-v c h verlag gmbh
Series Title: Chemistry - a European Journal vol:8 issue:5 pages:1101-1105
Abstract: This paper describes the first examples of heteropolynuclear metallomesogens that contain both a transition metal ion and a trivalent lanthanide ion. Adducts were formed between a mesomorphic [Cu(salen)] complex (salen = 2,2'-N,N'-bis(salicylidene)ethylenediamine) with six terminal tetradecyloxy chains and a lanthanide nitrate (Ln=La, Gd). Different stoichiometries were found, depending on the lanthanide ion: a trinuclear copper-lanthanum - copper complex [La(NO3){Cu(salen)}(2)] and a binuclear copper-gadolinium complex [Gd(NO3)(3)CU(salen)]. The compounds exhibit a hexagonal columnar mesophase (Co1(H)) over a wide temperature-range with rather low melting temperatures. Although the clearing point could be observed for the parent [Cu(salen)] complex, the mixed f - d complexes decomposed in the high-temperature part of the mesomorphic domain before clearing. On the basis of X-ray diffraction measurements and molecular modelling, a structural model for the mesophase of the metal complexes is proposed.
ISSN: 0947-6539
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Design and Synthesis
Centre for Educational Development (-)
× corresponding author
# (joint) last author

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