A Novel Organic–Inorganic Hybrid Polyoxoniobate Constructed from {[Cu(en)(H2O)][HNb6O19]}5? Polyoxoanions and Methane-like {K4Na}5+ Cations |
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| Authors: | Guo Chen Chunzhang Wang Pengtao Ma Jingping Wang and Jingyang Niu |
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| Institution: | (1) Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004, People’s Republic of China; |
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| Abstract: | A novel organic–inorganic hybrid polyoxoniobate K8Na2{Cu(en)(H2O)]2 HNb6O19]2}·25H2O (en = ethylenediamine) 1 has been synthesized by the diffusion method and structurally characterized by elemental analyses, IR, UV-Vis spectra, thermogravimetric
(TG) analysis and single crystal X-ray diffraction. The structure analysis indicates that 1 consists of two {Cu(en)(H2O)]HNb6O19]}5− polyoxoanions linked each other by two methane-like {K4Na}5+ cationic clusters. Surface photovoltage spectroscopy (SPS) and electric field induced surface photovoltage spectroscopy (EFISPS)
measurements indicate that 1 is the n-type conduction characteristic. In situ UV and CV studies indicate that 1 can stably exist in the larger pH ranges in aqueous solution. |
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