Conformation, hydrogen bonds and their effects on the packing of phenol, 2,2′-bis-[1,3-phenylenebis(methylidynenitrilo)] and phenol, 2,2′-bis-[2,5-thiophenediylbis(methylidynenitrilo)]

The crystal structure of phenol, 2,2′-bis-[ 1,3- phenylenebis(methylidynenitrilo)] (1), and phenol, 2,2′-bis-[2,5- thiophenediylbis(methylidynenitrilo)] (2) are described with connection to the effect of hydrogen bonding on the molecular conformation and on the packing of molecules in the unit cell. The conformation is compared to the conformation observed in similar compounds. The geometric parameters of hydrogen bonding between hydroxyl groups are analyzed from crystallographic data provided by the Cambridge Crystallographic Data Center.