Structural studies of di-Schiff bases with a middle flexible group, relationship between the structure and liquid crystal properties

P. Cerrada, M. Marcos, J. L. Serrano, C. Jaime

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Resum

The molecular geometry of four series of di-Schiff bases with a middle flexible group: N,N′-di-(4-n-alkoxybenzilidene)-1,2-diaminoethane (I), N,N′-di-(4-n-alkoxy-α-methylbenzilidene)-1,2-diaminoethane (II), N,N′-di-(4-n-alkoxy-2-hydroxybenzilidene)-1,2-diaminoethane (III), N,N′-di-(4-n-alkoxy-2-hydroxy-α-methylbenzilidene)-1,2-diaminoethane (IV), was studied by spectroscopic (1H NMR and UV), empirical (MM2) and semiempirical (MNDO) methods. The compounds derived from aldehyde were liquid crystals, whereas the compounds derived from ketone were not. The relation between structure and mesogenic properties was studied. © 1989.
Idioma originalAnglès
Pàgines (de-a)147-159
RevistaJ. Mol. Struct.
Volum193
NúmeroC
DOIs
Estat de la publicacióPublicada - 1 de gen. 1989

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