The relations between the existing forms of polyborate anions and the crystallizing solid phases, Cs2B4O7.5H2O and CsB5O8.4 H2O have been gained.

• 提出了溶液中硼氧配阴离子的存在形式及其结晶析出的Cs_2B_4O_7·5H_2O和CsB_5O_8·4H_2O固相的关系。