Circu, V., Gibbs, T.J.K., Omnes, L., Horton, P.N., Hursthouse, M.B. and Bruce, D.W.
Orthometallated palladium(II) imine complexes as candidate materials for the biaxial nematic phase. Crystal and molecular structure of three palladium imine complexes
Journal of Materials Chemistry, 16, (44), . (doi:10.1039/b608823f).
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The synthesis, characterisation and liquid crystal properties of some forty palladium imine complexes are reported, along with the single crystal X-ray structures of three derivatives. The complexes contain an imine ligand, bound to palladium in an ortho-metallated fashion, and a beta-diketonate; the liquid crystal behaviour is studied as a function of the structure of both ligands. The design of these complexes sought to address methods for promoting specific lateral interactions as a means to induce correlations perpendicular to the main liquid crystal director. Such interactions could stabilise lower-symmetry nematic phases such as N-B, a proposition supported by calculations.
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