STRUCTURE OF COORDINATION POLYMERS Cs5[{Ln(H2O)4(C2H6O)}{Re6Se8(CN)6}2]x2H2O (Ln = La, Nd)
M. S. Tarasenko1, N. G. Naumov1,2, N. V. Kuratieva1,2
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
Keywords: рений, октаэдрический кластер, РЗЭ, синтез, комплексные соединения, кристаллическая структура, rhenium, octahedral cluster, rare earth elements (REE), synthesis, complex compounds, crystal structure
Abstract
Two new Cs5[{Ln(H2O)4(C2H6O)}{Re6Se8(CN)6}2]×2H2O (Ln = La, Nd) compounds are obtained by the interaction of aqueous Cs3KRe6S8(CN)6 and LnCl3 solutions in the presence of ethanol. These compounds are isostructural, and crystallize in the tetragonal crystal system (space group P 4/ ncc ) with the following unit cell parameters: a = 17.9102 Å, c = 19.6694 Å for La, and a = 17.8846 Å, c = 19.6425 Å for Nd. The structure of the compounds consists of corrugated [{Ln(H2O)4(C2H6O)}{Re6Se8(CN)6}2]5-layers. Cesium cations compensating the negative charge are located in both cavities of the corrugated layer and between the layers.
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