KLi₂RE(BO₃)₂ (RE = Dy, Ho, Er, Tm, Yb, and Y): Structural, Spectroscopic, And Thermogravimetric Studies on a Series of Mixed-Alkali Rare-Earth Orthoborates
inorgchem.0c02684 We report a detailed structural, spectroscopic, and thermogravimetric investigation of a new series of mixed-alkali rare-earth orthoborates KLi 2 RE(BO 3 ) 2 (RE = Dy, Ho, Er, Tm, Yb [...] 2 (BO 3 ) 4 O 4 ] 14– anionic clusters where the edge-sharing REO 7 pentagonal bipyramids are connected by BO 3 groups and both K + and Li + cations are located at the interstitial voids of the 3D network [...] were directly prepared by a flux method as well as mechanically separated from the polycrystalline powder obtained from the conventional solid-state reactions. All KLi 2 RE(BO 3 ) 2 members are isotypic