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Автор Fletcher, J. M.
Автор Gardner, W. E.
Автор Fox, A. C.
Автор Topping, G.
Дата выпуска 1967
dc.description Physical measurements have been made on samples of α- and β-RuCl3 of relatively high purity. From X-ray powder patterns, the existence of a superstructure has been detected in α-RuCl3, and the structure of β-RuCl3 has been found to be of the β-TiCl3 type with linear chains of ruthenium atoms lying in distorted octahedra of chlorine atoms. The infrared spectra have been obtained down to 70 cm.<sup>â 1</sup>; the nine bands observed for β-RuCl3 indicate that the space group is the trigonal P3c1 (C <sup>3</sup> 3v ), which means that there areâ RuCl3â RuCl3â RuCl3â units in the chains. There is a strong band attributed to a Ruâ Cl stretching vibration at the relatively high frequency of 376 cm.<sup>â 1</sup>. The magnetic susceptibilities, obtained from 8 to 740°K for α-RuCl3, and from 8 to 560°K for β-RuCl3, show that α-RuCl3 is antiferromagnetic below 13°K, and β-RuCl3 below ca. 600°K, but in neither case has the antiferromagnetism been detected by neutron diffraction. The temperature dependence of the susceptibilities has been compared with the predictions of crystal field theory for α-RuCl3, and with the theory of linear Heisenberg chains for β-RuCl3.
Формат application.pdf
Издатель Royal Society of Chemistry
Название X-Ray, infrared, and magnetic studies of α- and β-ruthenium trichloride
Тип research-article
DOI 10.1039/J19670001038
Print ISSN 0022-4944
Журнал Journal of the Chemical Society A: Inorganic, Physical, Theoretical
Первая страница 1038
Последняя страница 1045

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