ISSN:
0044-2313
Keywords:
Alkaline earth metals
;
phosphorus nitrides
;
synthesis
;
crystal structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Mg2PN3 and Ca2PN3 - Phosphorus(V) Nitrides with Infinite Chains of Corner Sharing PN4 TetrahedraMg2PN3 and Ca2PN3 have been synthesized by the reaction of the respective metal nitrides with P3N5 at 800°C. The products have been obtained as fine crystalline powders. The crystal structures have been determined on the basic of powder diffraction data. Mg2PN3 (Cmc21, a = 972,64(8), b = 564,30(5), c = 473,02(2) pm, Z = 4) and Ca2PN3 (Cmca, a = 519,14(4), b = 1031,63(8), c = 1128,8(1) pm, Z = 8) contain Mg2+ and Ca2+ ions, respectively, as well as PN3 Zweier chains of corner sharing PN4 tetrahedra. A significant difference of the stretching factor of the PN3 chains has been observed in Mg2PN3 (fs = 0,88) and Ca2PN3 (fs = 1,0).
Notes:
Mg2PN3 und Ca2PN3 wurden durch Reaktion der jeweiligen Metallnitride mit P3N5 bei 800°C als feinkristalline Pulver erhalten. Ihre Kristallstrukturen wurden aus Pulverdaten bestimmt und verfeinert. Mg2PN3 (Cmc21, a = 972,64(8), b = 564,30(5), c = 473,02(2) pm, Z = 4) und Ca2PN3 (Cmca, a = 519,14(4), b = 1031,63(8), c = 1128,8(1) pm, Z = 8) enthalten im Festkörper Mg2+- bzw. Ca2+-Ionen und PN3-Zweierketten eckenverknüpfter PN4-Tetraeder. Es ergeben sich deutlich unterschiedliche Streckungsfaktoren der PN3-Ketten von fs = 0,88 (Mg2PN3) und fs = 1,0 (Ca2PN3).
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19976230112
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