The crystal structure of emeleusite, a novel example of sechser-doppelkette
Abstract
Emeleusite, Na2LiFeIIISi6O15, is orthorhombic, space group Acam with a = 10.072(3) Å, b = 17.337(6) Å and c = 14.004(3) Å, Z = 8. X-ray data were collected on a four-circle diffractometer to give 563 independent reflections with I > 3 σ (I). The structure was solved by means of Patterson technique followed by Fourier syntheses and refined by least squares to Rw = 0.043.
The structure consists of corrugated double silicate chains with a six tetrahedral repeat (sechser doppelkette). The double silicate chains are linked by chains of Na(2) polyhedra and chains of alternating Li tetrahedra and Fe octahedra. Na(1) is located on the mirror plane coordinated by nine oxygens.
Emeleusite is isostructural with tuhualite, zektzerite and Na2Mg2Si6O15, and more distantly related to the milarite group.
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- The crystal structure of emeleusite, a novel example of sechser-doppelkette
- Verfeinerung der Kristallstruktur des Natriumperchlorats NaClO4
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Articles in the same Issue
- An application of the Patterson method to the determination of the structures composed of two kinds of layers with approximately equal thickness
- Madelung energies and cation distributions in olivine-type structures
- Refinement of the crystal structure of diphenylacetylene
- Crystal-structure determination of euphenyl chloroacetate
- Die Kristall- und Molekülstruktur von 1,3,7,8,8a,9-Hexachlor-4a,5,6,8a-tetrahydro-1,3epidioxy-4,6-methanoisochroman
- Thermal expansion from 25° to 500°C of a few ionic radii
- Lattice parameters and space group of bis-2-bromo-5methoxy-benzylidine-succinic acid (C20H16O6Br2)
- Dichlorophosphate von Niob, Tantal, Zirkonium und Hafnium; die Kristallstruktur von NbOCl3 · POCl3
- Limiting forms and comprehensive complexes for crystallographic point groups, rod groups and layer groups
- Verbotene Reflexe im Röntgenbeugungsbild von Boratran, B(OC2H4)3N
- The scaling of X-ray intensity data: on the calculation of |E| values
- The crystal structure of emeleusite, a novel example of sechser-doppelkette
- Verfeinerung der Kristallstruktur des Natriumperchlorats NaClO4
- Preparation and X-ray analysis of trimethylsulfonium sulfate [(CH3)3S+]2SO2−4
- Jahresversammlung der Schweizerischen Gesellschaft für Kristallographie
