Crystal structure of Rb6[B12O18(OH)6]·2H2O

Abstract

The solvothermal reaction of H3BO3, sodium tert-butoxide, Rb2CO3 and pyridine led to a new alkaline metal borate hexarubidium hexahydroxydodecaborate dihydrate, Rb6[B12O18(OH)6]·2H2O. Its structure contains a large cyclic dodecaoxoboron cluster, [B12O18(OH)6]6−, formed by six {B3O3} rings. In the crystal, O—H...O hydrogen bonds between the components lead to the formation of a three-dimensional supramolecular framework.

Keywords

• alkaline metal borate
• solvothermal synthesis
• hydrogen bond
• supramolecular framework
• crystal structure