ISSN:
0044-2313
Keywords:
Sodium orthoplumbate
;
preparation
;
crystal structure
;
MAPLE and CHARDI calculations
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Na4[PbO4] - Preparation of new Plumbates(IV) by Oxidizing Intermetallic PhasesBy oxidizing NaPb with Na2O2 (molar ratio Na2O2:NaPb = 2.04:1; Ag-tubes; 600°C/50d) we obtained for the first time small orange coloured single crystals of Na4[PbO4]: Na4[SiO4]-type [2], P—1 (I.T. No. 2) with a = 898.5(3); b = 675.6(3); c = 592.2(2) pm; α = 124.75(1)°; β = 96.75(1)°; γ = 100.18(2)°; Z = 2; (four circle diffractometer data (MoKα-; 3 251 Io(hkl); R = 3.4%; Rw = 3.0%), parameters see text. Furthermore the Madelung part of lattice energy (MAPLE), effective coordination numbers (ECoN), mean fictive ionic radii (MEFIR) and the charge distribution (CHARDI) are being calculated.
Notes:
Durch Oxydation von NaPb mit Na2O2 (mol. Verhältnis Na2O2:NaPb = 2,04:1; Ag-Bömbchen; 600°C/50d) wurden erstmals orangefarbene, gedrungene Einkristalle von Na4[PbO4] erhalten: Na4[SiO4]-Typ [2], P—1 (I.T. No. 2) mit a = 898,5(3); b = 675,6(3); c = 592,2(2) pm; α = 124,75(1)°; β = 96,75(1)°; γ = 100,18(2)°; Z = 2; (Vierkreisdiffraktometerdaten; MoKα-; 3 251 Iohkl); R = 3,4%; Rw = 3,0%), Parameter siehe Text. Ferner werden der Madelunganteil der Gitterenergie (MAPLE), Effektive Koordinationszahlen (ECoN), Mittlere Fiktive Ionenradien (MEFIR) und die Ladungsverteilung (CHARDI) berechnet.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19946200803
