Exploration of a new compound in the M-B-O-X (M: alkali metals; X: halogen) system: Preparation, crystal and electronic structures, and optical properties of Na3B6O10Br

The crystal structure contains an infinite three-dimensional matrix that is built from B6O13 units, Na(1)O4Br2, Na(2)O6Br, and Na(3)O6 polyhedra. Interestingly, four B6O13 units are interconnected by oxygen atoms forming hexadecagon huge pores.