Bis(salicylaldiminate) copper(II) and palladium(II) complexes: towards columnar mesophases |
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| Authors: | JOAQUÍN BARBERA´ RAQUEL GIME´NEZ NE´LIDA GIMENO MERCEDES MARCOS MARIA DEL CARMEN PINA JOSE´ LUIS SERRANO |
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| Institution: | 1. Química Orgánica, Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain;2. Instituto de Materiales y Reactivos. Universidad de La Habana. Zapata y G, Vedado. 10400 La Habana, Cuba |
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| Abstract: | Copper and palladium complexes of new salicylaldimines derived from 3,4,5-tridecyloxyaniline, 2,3,4-tridecyloxyaniline and 4-decyloxyaniline have been synthesized and characterized. All the ligands bear four or more aliphatic chains with the aim of inducing columnar mesophases at low temperatures. In particular, metal complexes derived from 4-(3,4,5-tridecyloxybenzoyloxy)-salicyliden-3,4,5-tridecyloxyaninile display rectangular columnar mesophases at (or near) room temperature. These mesophase assignments have been confirmed by X-ray diffraction. A significant decrease of the melting points of the compounds is observed in the tridecyloxyaniline derivatives compared with those of similar complexes derived from mono- or di-decyloxyaniline. |
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