A series of three-dimensional coordination polymers with general formula [{Ln(H(2)O)(n)}{Re(6)Te(8)(CN)(6)}] center dot xH(2)O (Ln = Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb; n = 3, 4, x = 0, 2.5)

作者：Tarasenko Maria S; Naumov Nikolay G^*; Naumov Dmitry Yu; Kim Sung jin; Fedorov Vladimir E

来源：Polyhedron, 2008, 27(11): 2357-2364.

DOI：10.1016/j.poly.2008.04.054

• rhenium
• octahedral cluster
• cyanide
• lanthanides
• coordination framework

A series of new compounds containing rare earth cations (Eu to Yb) and paramagnetic cluster anion [Re(6)Te(8)(CN)(6)](3-) was prepared and investigated. The X-ray structural analyses have revealed that the compounds [{Ln(H(2)O)(4)}{Re(6)Te(8)(CN)(6)}] center dot 2.5H(2)O; Ln = Eu (1), Tb (3), Dy (4), Ho (5), Er (6), Tm (7), [{Gd(H(2)O)(3)}{Re(6)Te(8)(CN)(6)}] center dot 2.5H(2)O (2) and [{Yb(H(2)O)(4)}{Re(6)Te(8)(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 mu(B) for compound 2 and 10.79 mu(B) for compound 5 with weak antiferromagnetic ordering appeared at low temperatures.

• 出版日期2008-8-4