ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Magnetochemistry of Fluoroargentates(II): Investigation of Ba[AgF4], Sr[AgF4], Ba2AgF6, K[AgF3], and Cs[AgF3]Ba[AgF4] (Θ = -4 K, μ = 1.92 μB), isostructural with K[BrF4] with planar [AgF4] groups, fullfil the Curie-Weiss-law, also Ba2AgF6 (Θ = 4 K, Θ = 1.85 μB) which is related with the structure of Ba2CuF6. The variante of perovskite-type K[AgF3] (orthorhombic) and Cs[AgF3] (tetragonal perovscite) show collective magnetic interactions (TN = 80 K, KAgF3, and 50 K, CsAgF3) and show a behaviour like AgF2 (TN160 K) correspondingly to the magnetic dilution. Above TN paramagnetism is nearly independend of tempearture.
Notes:
Ba[AgF4] (Θ = -4K, μ = 1,92μB), Sr[AgF4] (μ = -6 K, μ = 1,78μB) und Hg[AgF4] (Θ = -6 K, μ = 1,86 μB), Vertreter des K[BrF4]-Typs mit planaren [AgF4]-Gruppen, befolgen das Curie-Weissche Gesetz, ebenso Ba2AgF6, strukturell mit Ba2CuF6 verwandt (Θ = +4 K, μ = 1,85 μB). Die Perowskit-Varianten K[AgF3] (orthorhombisch) und Cs[AgF3] (tetragonaler Perowskit) zeigen kollektive magnetische Wechselwirkungen (TN = +80 K, KAgF3, bzw. +50 K, CsAgF3) und lehnen sich, der magnetischen Verdünnung entsprechend, an AgF2 (TN = 160 K) an. Oberhalb TN tritt praktisch temperaturunabhängiger Paramagnetismus (μ ≈ 1,0 μB) auf.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19744070205
