ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
On Binary Tetrafluorides of the ZrF4 TypeFor the first time colourless single crystals MF4 (M = Hf, Th), monoclinic with a = 1172.5 pm, b = 986.9 pm, c = 763.6 pm and β = 126.15°, R = 6.7% respectively RW = 7.24% (Hf), a = 1304.9 pm, b = 1112.0 pm, c = 853.8 pm and β = 126.30°, R = 4.48% respectively RW = 4.28% (Th), Spacegrp. C2/c-C2h6 (Nr. 15), Z = 12 (Fourcircle-Diffraktometer Siemens AED 2, MoKα, 1040 von 1050 Io(hkl)) (Hf), 1446 von 1446 Io(hkl) (Th) have been obtained.The “Madelungpart of Lattice Energy, MAPLE”, “Mean Fictive Ionic Radii, MEFIR”, and “Effective Coordination Numbers, ECoN”, were calculated and discussed.
Notes:
Die binären Fluoride MF4 (M = Hf, Th) wurden erstmals in Form von farblosen Einkristallen, monoklin mit a = 1172,5 pm, b = 986,9 pm, c = 763,6 pm und β = 126,15°, R = 6,7% bzw. RW = 7,24% (Hf), a = 1304,9 pm, b = 1112,0 pm, c = 853,8 pm und β = 126,30°, R = 4,48% bzw. RW = 4,28% (Th), Raumgruppe C2/c-C2h6 (Nr. 15), Z = 12 (Vierkreisdiffraktometer Siemens AED 2, MoKα, 1040 von 1050 Io(hkl)) (Hf), 1446 von 1446 Io(hkl) (Th), dargestellt und untersucht.Der Madelunganteil, MAPLE, sowie „Mittlere Fiktive Ionenradien, MEFIR“, und „Effektive Koordinationszahlen, ECoN“, wurden berechnet und diskutiert.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19905880105
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