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Three new series of heterocyclic pyrazoles Mpz-C n and Epz-C n and isoxazoles Iz-C n were prepared, characterized, and their mesomorphic properties investigated. These heterocyclic derivatives were obtained by condensation–cyclization of β-diketones with methylhydrazine, 2-hydradinoethanol or hydroxylamine in refluxing THF/ethanol. One single crystallographic structure of nonmesogenic...
The synthesis and mesomorphism for two series of unsymmetrical pyrazoles and their nickel(II) complexes were described. This is the first example of nickel complexes exhibiting columnar phase. The derivatives with two alkoxy chains exhibited smectic A or smectic C phases; however, all derivatives with four alkoxy chains formed hexagonal columnar phases. In contrast, all nickel(II) complexes 1a formed...