A series of three-dimensional coordination polymers with general formula [{Ln(H2O)n}{Re6Te8(CN)6}] · xH2O (Ln = Eu,Gd, Tb,Dy, Ho,Er, Tm,Yb; n = 3, 4, x = 0, 2.5) |
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| Authors: | Maria S Tarasenko Nikolay G Naumov Dmitry Yu Naumov Sung-Jin Kim Vladimir E Fedorov |
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| Institution: | 1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3 Ak. Lavrentiev Ave., Novosibirsk 630090, Russia;2. Department of Chemistry and Nano Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea |
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| Abstract: | A series of new compounds containing rare earth cations (Eu to Yb) and paramagnetic cluster anion Re6Te8(CN)6]3− was prepared and investigated. The X-ray structural analyses have revealed that the compounds {Ln(H2O)4}{Re6Te8(CN)6}] · 2.5H2O; Ln = Eu (1), Tb (3), Dy (4), Ho (5), Er (6), Tm (7), {Gd(H2O)3}{Re6Te8(CN)6}] · 2.5H2O (2) and {Yb(H2O)4}{Re6Te8(CN)6}] (8) are three-dimensional polymers based on Re–CN–Ln interactions. Measurements of magnetic susceptibility for 2 and 5 showed that effective magnetic moment (at 300 K) was 8.13 μB for compound 2 and 10.79 μB for compound 5 with weak antiferromagnetic ordering appeared at low temperatures. |
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| Keywords: | Rhenium Octahedral cluster Cyanide Lanthanides Coordination framework |
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