Structural characterization of the mesophases exhibited by dicopper and diruthenium trialkyloxybenzoates

Authors
Chaia, Z Heinrich, B Cukiernik, F Guillon, D
Citation
Z. Chaia et al., Structural characterization of the mesophases exhibited by dicopper and diruthenium trialkyloxybenzoates, MOL CRYST A, 330, 1999, pp. 1457-1464
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN journal
1058725X → ACNP
Volume
330
Year of publication
1999
Part
3
Pages
1457 - 1464
Database
ISI
SICI code
1058-725X(1999)330:<1457:SCOTME>2.0.ZU;2-1
Abstract
Binuclear Copper and Ruthenium complexes derived from long-chain 3,4,5-tira lkyloxybenzoates (noted as B3OCn), namely Ru-2(B3OCn)(4)Cl and Cu-2(B3OCn)( 4) with n = 10, 12, 14, 16 and 18, were synthesized. The structure of their mesophases was characterized by X-ray diffraction. Both series exhibit low -temperature liquid crystalline phases and, in particular, room temperature mesophases for the lower homologues of the ruthenium series. The mesophase s exhibited by Ru-2(B3OCn)(4)Cl were found to be hexagonal columnar (Col(H) ) in nature, whereas the structure of the mesophases of the copper derivati ves depends on the aliphatic chain length, being Col(H) for n = 10, 12, 14 and cubic for the longer homologues.