Halide polyhydrates of some rare-earth elements: Synthesis and structures

• Published in: Russian journal of coordination chemistry Vol. 37; no. 9; pp. 641 - 649
• Main Authors: Rukk, N. S., Albov, D. V., Skryabina, A. Yu, Kravchenko, V. V., Mavrin, B. N., Zamalyutin, V. V., Alikberova, L. Yu
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.09.2011
• Subjects: Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Physical Chemistry; Monoclinic Crystal; Hydroxo Complex; Alkali Metal Hydroxide; Coordination Chemistry; Scandium
• ISSN: 1070-3284; 1608-3318
• DOI: 10.1134/S1070328411080094

Scandium, yttrium, lanthanum, cerium, and terbium bromides and iodides of the formulas [(H 2 O) 5 Sc(μ-OH) 2 Sc(H 2 O) 5 ]Br 4 · 2H 2 O ( I ), [(H 2 O) 5 Sc(μ-OH) 2 Sc(H 2 O) 5 ]I 4 ( II ), [Y(H 2 O) 8 ]Br 3 · 2H 2 O ( III ), [(H 2 O) 7 La(μ-Br) 2 La(H 2 O) 7 ]Br 4 ( IV ), [Ce(H 2 O) 9 ]I 3 ( V ), and [Tb(H 2 O) 9 ]I 3 ( VI ) were obtained and examined using X-ray diffraction and IR and Raman spectroscopy. It was found that the compositions and structures of complexes II and III differ from the literature data. Crystallographic parameters were obtained for isostructural complexes V and VI . It was demonstrated that the conditions of the synthesis and the possibility of protolysis are decisive for the formation of polynuclear oxo and hydroxo complexes of rare-earth metal halides.