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Crystal Structure of B-Type Tm2Si2O7 (≡Tm4[Si3O10][SiO4])
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Veröffentlicht/Copyright:
2. Juni 2014
Single crystals of B-type thulium oxodisilicate Tm2Si2O7 were obtained by the reaction of Tm, S and RbCl with the wall of a silica tube in an attempt to synthesize ternary alkalimetal thulium sulfides (e.g. Rb3Tm7S12). It crystallizes triclinically in space group P1̄(a = 655.91(5), b = 659.04(5), c = 1195.32(9) pm, α = 94.361(8), β = 91.102(8), γ = 92.005(8)◦), with four formula units of Tm2Si2O7 per unit cell. Instead of pyro-anionic [Si2O7]6− groups the title compound contains both ortho-silicate tetrahedra [SiO4]4− and catena-trisilicate units [Si3O10]8−. Therefore the formula Tm4[Si3O10][SiO4] (Z = 2) appears more adequate. The four crystallographically independent Tm3+ cations show coordination numbers from six to eight with distorted octahedral, bicapped trigonal prismatic and square antiprismatic oxygen coordination spheres.
Received: 2003-7-4
Published Online: 2014-6-2
Published in Print: 2003-9-1
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Artikel in diesem Heft
- ERRATUM
- Asymmetric Catalysis, 154 [1]. New 1,1’-Binaphthyl Ligands for Enantioselective Catalysis
- Ternary Gallides REMgGa (RE = Y, La, Pr, Nd, Sm–Tm, Lu) – Synthesis and Crystal Chemistry
- Organometallic Compounds of the Lanthanides 169. Lanthanidocene Complexes Containing Chiral Nitrogen-Functionalized Cyclopentadienyl Ligands
- Structural Features of a Sulfur-Containing Group 4 Metalla[11]-crown-4 Derivative
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- Synthesis of Spacered Nucleoside Analogues Comprising a Difluorocyclopropane Moiety
- Synthesis of Some New Chiral Tricyclic and Macrocyclic Pyridine Derivatives as Antimicrobial Agents
- Molecular Complexes, 14. Isomeric Arene Complexes of Caffeine and 1,3,7,9-Tetramethyluric Acid Detected with Toluene. Polar Interactions Inverted with Hexafluorobenzene
- Synthesis and One-Electron Oxidation Chemistry of Stable β,β-Dimesityl Enols with Heteroaryl Substituents
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