A new hydrated ammonium hydroxyborate, (NH4)2[B10O14(OH)4]•H2O

The structure of a new synthetic compound, diammonium tetrahydroxydecaborate monohydrate, has been determined by single-crystal X-ray diffraction. It crystallizes in triclinic space group P (1) over bar and all atoms occupy general sites. The title compound is composed of [B10O15(OH)(4)](4-) ions as the fundamental building blocks, and these are linked end-to-end by sharing two common O atoms, thus producing infinite chains of composition [B10O14(OH)(4)](n)(2n-). These chains are linked by hydrogen bonds, thus forming borate sheets. Water molecules and ammonium ions between these sheets connect adjacent sheets via hydrogen bonds.