Synthesis, Crystal Structure and Characterization of the Barium Zinc Tellurate Disilicate: Ba₃Zn₆[TeO₆][Si₂O₇]₂

Synthesis, structures, and properties of two magnesium silicate fluorides Mg5(SiO4)2F2and Mg3SiO4F2

“…[1][2][3][4][5][6][7] SiO 4 units, the basic units of silicate, are often connected with adjacent SiO 4 tetrahedra or other anion groups by sharing one or more of the oxygen atoms to form the fascinating structural chemistry, such as islands, rings, chains, layers and frame shapes. [8][9][10][11][12] Among these shapes, the island structure, namely the isolated SiO 4 tetrahedron, has attracted increasing attention. Previously, several silicate minerals with isolated SiO 4 tetrahedral structure in the nature have been found, such as forsterite, pyrope and humite groups.…”

Process Oxygen Flow Influence on the Structural Properties of Thin Films Obtained by Co-Sputtering of (TeO2)x-ZnO and Au onto Si Substrates

“…Unfortunately, there exist very few works relating SiO 2 and tellurates together. However, the existing literature [36,37]…”

“…Unfortunately, there exist very few works relating SiO2 and tellurates together. However, the existing literature [36,37] points out the possible formation of a three-dimensional anionic network of {Zn6[TeO6][Si2O7]2} 6− built up from onedimensional chains of [Zn6TeO18] 18− interconnected by [Si2O7] 6− and packed with cations [36,37].…”

Bi2Te(IO3)O5Cl: a novel polar iodate oxychloride exhibiting a second-order nonlinear optical response

“…Examples of such asymmetric polar units in metal oxides include π-conjugated [BO 3 ] 3− or [B 3 O 6 ] 3− groups, 1-7 second-order Jahn-Teller (SOJT) distorted d 0 transition cations, [8][9][10] polar displacement of d 10 main-group cations-centered polyhedra, [11][12][13][14] and cations with stereochemically active lone-pair electrons. To obtain high polarizability, asymmetric structural units with large dipole moments are preferred as the primordial building blocks to design new crystals.…”

“…To obtain high polarizability, asymmetric structural units with large dipole moments are preferred as the primordial building blocks to design new crystals. Examples of such asymmetric polar units in metal oxides include π-conjugated [BO 3 ] 3− or [B 3 O 6 ] 3− groups, [1][2][3][4][5][6][7] second-order Jahn-Teller (SOJT) distorted d 0 transition cations, [8][9][10] polar displacement of d 10 main-group cations-centered polyhedra, [11][12][13][14] and cations with stereochemically active lone-pair electrons. [15][16][17][18][19][20][21][22][23] However, how to align these asymmetric units in a constructive fashion of macroscopic polarity remains a challenge.…”