RE₂[B₂(SO₄)₆] (RE= Y, La–Nd, Sm, Eu, Tb–Lu): a silicate-analogous host structure with weak coordination behaviour

Abstract

The very first thorough investigation of the rare earth borosulfates RE2[B2(SO4)6] with RE = Y, La–Nd, Sm, Eu and Tb–Lu focusses on synthetic aspects and especially optical properties.

Synthesis‐Controlled Polymorphism and Optical Properties of Phyllosilicate‐Analogous Borosulfates M[B2(SO4)4] (M=Mg, Co)

“…This is confirmed by PXRD after the thermal analysis (Figure S6 in the Supporting Information). Thus, both compounds show a slightly lower thermal stability than Mg 4 [B 2 O(SO 4 ) 6 ], comprising zero‐dimensional anions, [9] which is expected to be due to the higher condensed network [11] …”

“…Thus, both compoundss how as lightly lower thermal stability than Mg 4 [B 2 O(SO 4 ) 6 ], comprising zerodimensional anions, [9] whichi se xpectedt ob ed ue to the higher condensed network. [11] Conclusion . The polymorphs were assigned based on the total electronic energies obtained from DFT calculations.…”

Exploring Main Group Metal Borosulfates: Similarities and Differences of Two New Borosulfates M[B2O(SO4)3] (M = Sr, Pb)

“…A relatively new representative of silicate‐analogous materials are borosulfates, consisting of corner‐sharing borate and sulfate tetrahedra . Besides their vast structural diversity, borosulfates feature weak ligand field splitting and weak nephelauxetic effects, confirmed by the absorption properties of transition metal borosulfates M 4 [B 2 O(SO 4 ) 6 ] ( M = Co, Ni) and the luminescence properties of RE 2 [B 2 (SO 4 ) 6 ] ( RE = Ce, Eu, Tb) . In this rapidly growing compound class, only a few main group metals remain for which borosulfates are not known yet.…”

M[B2(SO4)4] (M = Mn, Zn)—Syntheses and Crystal Structures of Two New Phyllosilicate Analogue Borosulfates

“…To branch networks with sulfur in the center of the tetrahedra into further dimensions, the high charge has to be compensated. Therefore, the combination of (SO 4 )-and (BO 4 )-tetrahedra [12][13][14][15][16][17][18][19][20][21][22][23][24][25] Table 1 and X-ray crystallography for further data and details according the refinement). The crystal structures exhibit layer-like anionic subunits of vertex-shared (BO 4 )-and (SO 4 )-tetrahedra ( Figure 1) charge compensated by the respective divalent counter cations Mn 2+ and Zn 2+ .…”