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Thallium manganese sulfate hexahydrate, a missing Tutton’s salt, and a brief review of the entire family

Published online by Cambridge University Press:  29 February 2012

V. B. Nalbandyan
V. B. Nalbandyan
Affiliation:
South Federal University, 7 ul. Zorge, Rostov-na-Donu, 344090 Russia
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Abstract

A new Tutton’s salt Tl2[Mn(OH2)6](SO4)2 was grown from aqueous solutions and characterized by chemical analysis and X-ray powder diffraction. It was found to be monoclinic, space group P21/a, a=0.93276(6), b=1.25735(8), c=0.62407(4) nm, and β=106.310(3)°. It is unstable in warm air and dissolves incongruently. A comparison of unit cell volumes for all 37 Tutton sulfate phases found in ICDD’s PDF-2 database (86 entries) reveals a reasonable correlation with Shannon and Prewitt’s ionic radii [Acta Crystallogr. 25, 925–926 (1969)] and several deviations, most of them seeming to be erroneous entries.

Keywords

Tutton’s saltthallium sulfatemanganese sulfatecell volumeionic radii

Information

Type
Technical Articles
Information
Powder Diffraction , Volume 23 , Issue 1 , March 2008 , pp. 52 - 55
Copyright
Copyright © Cambridge University Press 2008

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