info:eu-repo/semantics/article
4'-[2-(2-Ethoxy-ethoxy)eth-oxy]-bi-phenyl-4-carboxylic acid: Correlation between its crystalline and smectic phases
Fecha
2009-12Registro en:
Montani, Rosana Silvia; Garay, Raúl Oscar; Cukiernik, Fabio Daniel; Garland, Maria T.; Baggio, Ricardo Fortunato; 4'-[2-(2-Ethoxy-ethoxy)eth-oxy]-bi-phenyl-4-carboxylic acid: Correlation between its crystalline and smectic phases; Wiley Blackwell Publishing, Inc; Acta Crystallographica Section C-Crystal Structure Communications; 65; 3; 12-2009; 81-84
0108-2701
CONICET Digital
CONICET
Autor
Montani, Rosana Silvia
Garay, Raúl Oscar
Cukiernik, Fabio Daniel
Garland, Maria T.
Baggio, Ricardo Fortunato
Resumen
The crystal structure of the dimeric title compound, C19H 22O5H, is dominated by a head-to-head hydrogen-bonding inter-action between centrosymmetrically related carboxyl groups in each monomer. The result is a dimeric axis of unusual length (ca 34 Å), but still shorter than what could be expected for a fully extended chain, owing to two turning points in the oligo-eth-oxy ends. This allows for an explanation of the structure of the smectic mesophase exhibited by this compound and at the same time fully validates former geometric estimations based on PM3 calculations. © 2009 International Union of Crystallography.