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A lanthanide-tellurium heterometal encapsulated sandwich-type heteropolyoxoniobate with a 3D pcu-type hydrogen-bonded
Rong-Da Lai1, Hui-Lin Feng1, Yan-Qiong Sun1
1College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, People's Republic of China. sunyq@fzu.edu.cn.
Abstract:
A rare sandwich-type heteropolyoxoniobate cluster, [Eu(H2O)3Te6Nb18O64(OH)4]15- {EuTe6Nb18}, has been isolated by simultaneously incorporating a lanthanide cation and tellurite anions into polyoxoniobate. The {EuTe6Nb18} cluster represents the first example of lanthanide-incorporated telluroniobate with unprecedented Eu-Te heterometal cations in the sandwiched sites. The N-H⋯O hydrogen bonds link the copper-amine complexes and {EuTe6Nb18} polyoxoanions into a 3D supramolecular framework 1 with pcu topology. Furthermore, compound 1 exhibits moderate proton conduction and water vapor adsorption properties.
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