Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.356, 495-502, 2001
Preparation of helical-type crystals from tryptamine and achiral carboxylic acids and their enantiomorphous control by pseudo-seeding
A series of helical-type co-crystals of tryptamine and achiral carboxylic acids were prepared by the self-assembly. Their crystal chirality is generated through the formation of a unidirectional two-fold helix between the two components. Several crystals of them having similar crystal structures were found to play the role of pseudo-seed crystals in chiral crystallization.
Keywords:chiral two-component crystals;helical chain structure;enantiomorphous control;pseudo-seeding;solid state CD spectrometry;tryptamine;carboxylic acids