Liquid crystals groups, Metallomesogenes

The alkyl and alkoxy cyanobiphenyls (n-CB and n-OCB) derivatives synthesized by Gray and coworkers and the bicyclohexyl derivatives (PCH- and CCH-n), 4, bind rapidly to a variety of metals. The Sheffield Liquid Crystal group [12] used these compounds for the synthesis of metallomesogens with a linear geometry M = Pd, Pt, Rh. 

Another interesting family of square-planar metallomesogens is that constituted by complexes of enaminoketones. Several copper complexes of type (233a) and (233b), with various n and w, have been synthesized, and when R is an alkoxy (OC H2 +i), alkyl (C H2/j+i), or alkanoate (C02C H2j,+i) group, the complexes are not liquid crystals, or exceptionally showed a monotropic SniA phase. ... 

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