Metallomesogens: synthesis and properties

Abstract

The synthesis, characterization and mesogenic behaviour of the copper(ii) and oxovanadium(iv) complexes derived from phenyltetrazole and benzothiazole and their corresponding ligands are reported. The ligands did not exhibit mesomorphism, whereas the complexes form monotropic smectic A and smectic C mesophases. The mesophases were identified according to their textures by optical microscopy.

References

1. A. M. Giroud-Godquin and P. M. Maitlis, Angew. Chem., Int. Ed. Engl., 1991, 30, 375.
2. P. Espinet, M. A. Estruelas, L. A. Oro and J. L. Serrano, Coord. Chem. Rev., 1992, 117, 215.
3. S. A. Hudson and P. M. Maitlis, Chem. Rev., 1993, 93, 861.
4. M. J. Baena, J. Barberá, P. Espinet, A. Ezcurra, M. B. Ros and J. L. Serrano, J. Am. Chem. Soc., 1994, 116, 1899.
5. E. Campillos, M. Marcos and J. L. Serrano, J. Mater. Chem., 1993, 3, 1049.
6. R. N. Butler and V. C. Garvin, J. Chem. Soc., Perkin Trans. 1, 1981, 390.
7. R. N. Butler, T. M. Mcevoy, F. C. Scott and J. C. Tobin, Can. J. Chem., 1977, 55, 1564.
8. H. Gallardo, E. Meyer and I. Vencato, Acta Crystallogr., Sect. C, 1995, 51, 2430.
9. H. Gallardo, I. M. Begnini and I. Vencato, Acta Crystallogr., Sect. C, 1997, 51, 2430.
10. D. Demus and H. Zaschke, Flússige Kristalle in Tabellen II, Springer Verlag, Leipzig, 1984.
11. H. Sackmann and D. Demus, Mol. Cryst. Liq. Cryst., 1966, 2, 81.
12. G. W. Gray and J. W. Goodby, Smectic Liquid Crystals: Textures and Structure, Heyden and Son Inc., 1984, pp. 47–48.