Molecules of the title compound, 3,3'-[4-(4-nitrophenyldiazenyl) phenylimino] dipropionic acid, C18H18N4O6, a model compound of second-order non-linear optically active polymers, form helicoidal rows via hydrogen bonding between carboxy groups. Pairs of helices are wrapped around the common axis in a double-helix arrangement unprecedented in dicarboxylic acids. The lateral packing of the helices shows an interdigitated antiparallel arrangement of the chromophore units.
Double Helix pattern in a model compound of non-linear optical polymers / Centore, Roberto; Carella, Antonio; A., Pugliese; Sirigu, Augusto; Tuzi, Angela. - In: ACTA CRYSTALLOGRAPHICA. SECTION C, CRYSTAL STRUCTURE COMMUNICATIONS. - ISSN 0108-2701. - STAMPA. - C62:(2006), pp. o531-o533. [10.1107/S0108270106025108]
Double Helix pattern in a model compound of non-linear optical polymers
CENTORE, ROBERTO;CARELLA, ANTONIO;SIRIGU, AUGUSTO;TUZI, ANGELA
2006
Abstract
Molecules of the title compound, 3,3'-[4-(4-nitrophenyldiazenyl) phenylimino] dipropionic acid, C18H18N4O6, a model compound of second-order non-linear optically active polymers, form helicoidal rows via hydrogen bonding between carboxy groups. Pairs of helices are wrapped around the common axis in a double-helix arrangement unprecedented in dicarboxylic acids. The lateral packing of the helices shows an interdigitated antiparallel arrangement of the chromophore units.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
