ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
On the Constitution of K3[FeO4]For the first time black orthorhombic single crystals of K3[FeO4] were prepared by heating well ground mixtures of the oxides (K2O2 and KFeO2 with K2O2:KFeO2 = 1.78:1.0, Ag-tube, 470°C, 18 d, 350°C, 5 d). Spacegroup Pnma with a = 770.16(13) pm, b = 909.20(17) pm, c = 783.70(14) pm.The structure has been determined by four-circle-diffractometer data [MoKα, 1241 of 1278 I0(hkl), R = 3.2%, Rw = 3.1%]; parameters as given in the text. The Madelung Part of the Lattice Energy, MAPLE, and the Effective Coordination Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, will be calculated and discussed.
Notes:
Erstmals wurde K3[FeO4] durch Tempern inniger Gemenge der Oxide (K2O2 und KFeO2 mit K2O2:KFeO2 = 1,78:1,0, Ag-Bömbchen, 470°C, 18 d, 350°C, 5 d) in Form von schwarzen, orthorhombischen Kristallen erhalten: Raumgruppe Pnma mit a = 770,16(13) pm, b = 909,20(17) pm, c = 783,70(14) pm.Die Struktur wurde mittels Vierkreisdiffraktometerdaten [MoKα, 1241 von 1278 I0(hkl), R = 3,2%, Rw = 3,1%] bestimmt; Parameter siehe Text. Der Madelunganteil der Gitterenergie, MAPLE, und Effektive Koordinationszahlen, ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, werden berechnet und diskutiert.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19905860116
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