LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

Abstract

A new chiral copper borophosphate, LiCu2[BP2O8(OH)2] (1), was crystallized from achiral inorganic raw materials in boric acid flux reaction. The structure features a 9-ring channel enclosed by triple right-handed helices. The bulk sample exhibits optical activity confirmed by circular dichroism (CD) spectra, indicating an interesting spontaneous resolution phenomenon.