Remarkable stabilization of the anionic semiquinone radical of 6-azaflavin by hydrogen bonding with a receptor in chloroform

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Takeshi Kajiki, Hideki Moriya, Shin-ichi Kondo and Yumihiko Yano


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.


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