Packing effects in 4,4'-bis(4-hydroxybutyl)-2,2'-bipyridine and 4,4'-bis(4-bromobutyl)-2,2'-bipyridine.
Structure analyses of 4,4'-bis(4-hydroxybutyl)-2,2'-bipyridine, C18H24N2O2, (I), and 4,4'-bis(4-bromobutyl)-2,2'-bipyridine, C18H22Br2N2, (II), reveal intermolecular hydrogen bonding in both compounds. For (I), O-H...N intermolecular hydrogen bonding leads to the formation of an infinite two-dimensional polymer, and pi stacking interactions are also observed. For (II), C-H...N intermolecular hydrogen bonding leads to the formation of a zigzag polymer. The two compounds crystallize in different crystal systems, but both molecules possess Ci symmetry, with one half molecule in the asymmetric unit.
Iyer
Vijay Mahadevan
VM
Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland. vijaymahadevan.iyer@unifr.ch
Stoeckli-Evans
Helen
H
D'Aléo
Anthony
A
De Cola
Luisa
L
Belser
Peter
P