T:Toxic;10043-35-3Relevant articles and documents
A new polytype of orthoboric acid, H3BO3-3T1
Shuvalov, Robert R.,Burns, Peter C.
, p. i47-i49 (2003)
The crystal structure of H3BO3-3T, a new trigonal polytype of orthoboric acid, consists of sheets of hydrogen-bonded B(OH)3 molecules similar to those found in the triclinic structure of orthoboric acid, H3BO3-2A. In each case, van der Waals forces connect the sheets. However, the stacking sequences of the sheets differ between the two polymorphs. In H3BO3-3T (space group P32), the sheets are stacked in the repeating sequence ABC ..., whereas in H3BO3-2/4 (space group P1), the sheets are stacked in the repeating sequence AB ....
Acentric polyborate, Li3[B8O12(OH) 3], with a new type of anionic layer and Li atoms in the cavities
Belokoneva, Elena L.,Dimitrova, Olga V.
, p. 3724 - 3727 (2013/05/09)
Single crystals of Li3[B8O12(OH) 3] were synthesized under hydrothermal conditions using a complex initial composition that included SiO2. The crystal structure is acentric, space group P62c, with a = 8.9301(2) A and c = 15.9962(4) A, and Z = 4. New double three-membered rings of hexaborate blocks and monoborate triangles are connected into a polyborate anionic layer. Although the new structure is similar to double ring silicate Na3Y[Si 6O15], detailed comparison of the anionic groups demonstrates principal differences between silicates and borates. Sodium silicate was proposed as an intrinsic fast ion conductor, and for the new borate Li ionic conductivity is very probable, as Li atoms in it are in positions similar to the Na atoms in the silicate.
