Remarkable stabilization of the anionic semiquinone radical of 6-azaflavin by hydrogen bonding with a receptor in chloroform
Abstract
An anionic semiquinone radical of 6-azaflavin (6-AzaFl) was found to be stabilized by hydrogen bonding of a melamine derivative bearing an N-phenylguanidinium ion in CHCl3, but not by the correponding N-unsubstituted guanidinium ion.