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Journal ArticleDOI

Die Kristallstruktur von CsTcO4 [1]

G. Meyer, +1 more
- 01 Feb 1976 - 
- Vol. 420, Iss: 1, pp 40-50
TLDR
In this paper, the crystal structure of CsTcO4 was calculated and discussed using MADELUNG Part of Lattice Energy, MAPLE, MEIR, and Effective Coordination Numbers, ECoN.
Abstract
CsTcO4 kristallisiert orthorhombisch mit a = 5,727, b = 5,921 und c = 14,34 A, Z = 4, in der Raumgruppe Pnma (Nr. 62, I.T.). Die Lageparameter von Cs und Tc wurden aus Einkristalldaten verfeinert, die O-Positionen erstmals bestimmt (Parameter: vgl. Text). Es liegt eine Verzerrungsvariante des Scheelittyps vor. Der MADELUNG-Anteil der Gitterenergie, MAPLE, sowie „Mittlere Effektive Ionenradien”, MEIR, und Effektive Koordinationszahlen, ECoN, werden berechnet und diskutiert. The Crystal Structure of CsTcO4 CsTcO4 crystallizes orthorhombic with a = 5.727, b = 5.921 and c = 14.34 A. Z = 4, space group Pnma (Nr. 62, I.T.). The metal positions were refined by single crystal data, the oxygen positions first determined: the CsTcO4 structure is a slight distortion of the scheelite arrangement (parameters: see text). The MADELUNG Part of Lattice Energy, MAPLE, „Mean Effective Ionic Radii”, MEIR, and Effective Coordination Numbers, ECoN, are calculated and discussed.

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Citations
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Journal ArticleDOI

Effective coordination numbers (ECoN) and mean fictive ionic radii (MEFIR)

TL;DR: In this article, Nowacki et al. derived the Effective Coordination Numbers (ECoN) for the Cl-part of the crystal structure of ZrCl4.
Journal ArticleDOI

Zur Kenntnis des (NH4)3SiF7‐Typs. Neue Metallfluoride A3MF7 mit M = Si, Ti, Cr, Mn, Ni und A = Rb, Cs

TL;DR: New metal fluorides A3MF7 with M = Si, Ti, Cr, Mn, Ni, and A = Rb, Cs▬▬▬▬▬▬▬▬▬▬▬▬▬ as discussed by the authors have been obtained by Guinier Simon et al.
Journal ArticleDOI

Die K4[Ag4O4] — Strukturfamilie

TL;DR: The crystal structure of K4[Ag4O4] has been revised in this paper and the distances between the crystal structure and the space-group I4m2 with the ring have been investigated.
Journal ArticleDOI

Neue Oxoferrate(III). Zur Kenntnis von Na5FeO4

TL;DR: In this article, the structure determination Na4Fe2O5 is built up by layers of [Fe 2O5], like those in silicates, and single crystals are transparent light yellow.
References
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Journal ArticleDOI

Die Koordinationszahl — ein „anorganisches Chamäleon”︁

R. Hoppe
- 01 Jan 1970 - 
TL;DR: In this paper, the Absicht zugrunde, den „schillernden”, den mehrdeutigen Charakter des Begriffes „Koordinationszahl” (KZ) und seine heutige Abgrenzung in der Strukturchemie insbesondere typischer Festkorper (Teilchenkollektive mit Nah-und Fernordnung) offenzulegen is discussed.
Journal ArticleDOI

The Coordination Number – an “Inorganic Chameleon”

R. Hoppe
- 01 Jan 1970 - 
TL;DR: In this article, the authors describe the changing ambiguous character of the term "coordination number" and its present-day definition in structural chemistry, particularly of typical solids (assemblies of particles with short-range and long-range order).
Journal ArticleDOI

Die Kristallstruktur von Na6[ZnO4]

TL;DR: In this article, the hexagonal crystal structure of Na6ZnO4, P63mc-C, was elucidated by means of diffraktometer data (84 hk0-hk3, Mo-Kα, R = R′ = 2.7%).
Journal ArticleDOI

Die Kristallstruktur von Na4CoO4[1]

TL;DR: According to X-ray investigations on single crystals, Na4CoO4 crystallizes triclinic (P1, a = 8.648, b = 5.702, c = 6.400 A, α = 123.9°, β = 98.1°, γ = 99.2°) as mentioned in this paper.