Chemistry Letters, Vol.38, No.3, 230-231, 2009
Crystal Structure of Complex of Gallocatechin Gallate and Caffeine
A merohedrally twinned crystal of the complex of (-)-gallocatechin gallate and caffeine was prepared in aqueous solution, and X-ray crystallographic analysis was performed. The driving. force for the formation of the complex was thought to be mainly the pi-pi interaction between the B' ring of GCg and caffeine, the B ring of GCg and caffeine.