Borate Fluoride and Fluoroborate in Alkali-Metal Borate Prepared by an Open High-Temperature Solution Method

By incorporation of the largest-electronegativity F atoms into borate, two novel halogen-containing borates, Li6RbB2O6F and K3B3O3F6, have been synthesized. Interestingly, Li6RbB2O6F is the first borate fluoride in alkali-metal borate. Meanwhile, K3B3O3F6 appears to be the first confirmed alkali-metal fluoroborate crystal grown by a high-temperature solution in air.

通过将电负性最大的氟（F）原子引入硼酸盐体系，本研究成功合成了两种新型含卤硼酸盐：Li₆RbB₂O₆F与K₃B₃O₃F₆。值得注意的是，Li₆RbB₂O₆F是碱金属硼酸盐体系中首例氟代硼酸盐。与此同时，K₃B₃O₃F₆是首例经证实的、通过空气中高温溶液法生长的碱金属氟硼酸盐晶体。