Crystal growth and structure of three new neodymium containing silicates: Na0.50Nd4.50(SiO4)3O,Na0.63Nd4.37(SiO4)3O0.74F0.26 and Na4.74Nd4.26(O0.52F0.48)[SiO4]4

Single crystals of Na_0.50Nd_4.50(SiO₄)₃O, Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26, and Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄ were synthesized via flux growth using a NaF/KF eutectic flux and the crystal structure was determined by single crystal X-ray diffraction. Na_0.50Nd_4.50(SiO₄)₃O and Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26 adopt the apatite structure and crystallize in the hexagonal space group P6₃/m, while Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄ crystallizes in the tetragonal space group I-4 and exhibits rare-earth mixing on the sodium site. The unit cells of the crystals are a = 9.5400(3) Å and c = 7.0331(5) Å for Na_0.50Nd_4.50(SiO₄)₃O, a = 9.5533(3) Å and c = 7.0510(4) Å for Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26, and a = 12.1255(3) Å and c = 5.4656(2) Å for Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄. These three compounds exhibit three-dimensional crystal structures that are discussed in detail in this paper.     

ChemInform Abstract: Tetrayttrium Difluoride Disilicate Orthosilicate,Y4F2[Si2O7][SiO4].

Colorless lath-shaped single crystals of the title compound are obtained from a melt of Y₂O₃, YF₃, and SiO₂ (2:5:3 molar ratio) using CsCl as a flux (evacuated silica tube, 973 K, 9 d, 10 K/h cooling rate).     

ChemInform Abstract: Redetermination of Na3TaF8.

The crystal structure of Na₃TaF₈ is redetermined at 153 K and well determined bond distances and angles are provided.     

ChemInform Abstract: Di- and Trinuclear Fluorooxoanions of Vanadium. Crystal Structures of Cs(NMe4)(V2O2F8(H2O)) and (Na,K)(NMe4)2(V3O3F12).

The compounds (I)-(IV) are prepared by reaction of V₂O₅ with 40% HF in the presence of suitable amounts of the corresponding cations.     

ChemInform Abstract: Hydrothermal Synthesis and Crystal Structure of Na3In(PO4)2.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

ChemInform Abstract: Na2MoO2‐δF4+δ — A Perovskite with a Unique Combination of Atomic Orderings and Octahedral Tilts.

The title compound (δ ≈ 0.08) is hydrothermally synthesized from a mixture of NaF, MoO₃, MoO₂, guanidinium carbonate, and HF in H₂O (autoclave, 160 °C, 3 d).     

ChemInform Abstract: V2O2F4 (H2O)2·H2O: A New V4+ Layer Structure Related to VOF3.

Single crystals of the title compound are prepared by hydrothermal reaction of VF₃ and H₂SeO₃ in ethylene glycol/HF (40%) in the presence of Et₂NH (autoclave, 393 K, 4 d).     

ChemInform Abstract: Crystal Structures of New Ternary Rare Earth Silicides Sc3Pr2Si4, Sc1.26Pr3.74Si4 and Sc3.96Nd1.04Si4 with Ordered and Partially Ordered Rare Earth Sites.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

ChemInform Abstract: Synthesis and Structure of ITQ-9: A New Microporous SiO2 Polymorph.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

ChemInform Abstract: Crystal Structures of Two Sodium Yttrium Molybdates: NaY(MoO4)2 (I) and Na5Y(MoO4)4 (II).

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

ChemInform Abstract: Crystal Structure and Sodium Environments in Sodium Tetratellurite,Na2Te4O9, and Sodium Tellurite,Na2TeO3, by X-Ray Crystallography and Sodium-23 NMR.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

ChemInform Abstract: Crystal Structure of the Binuclear Fluoro Compound Cs3Ga2F9.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

ChemInform Abstract: Structural Transformation Between Two Cubic Phases of (NH4)3SnF7.

Single crystals of (NH₄)₃SnF₇ are obtained from aqueous solutions of (NH₄)₂SnF₆ and excess NH₄F during solvent evaporation.     

ChemInform Abstract: Crystal Structure of Difluoroamine.

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ChemInform Abstract: Nonasodium Bis(hexahydroxoaluminate) Trihydroxide Hexahydrate.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.