| 光谱学与光谱分析 |
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| Spectroscopic Studies of Compounds with [(PO4)4MoⅤ6O15]12- Cluster |
| ZHANG Han-hui1, 2，LIN Zheng-zhong1, 2，HUANG Chang-cang1，SUN Rui-qing1，WU Xiao-yuan1，LIN Zhi-hua1 |
1. Department of Chemistry, Fuzhou University, Fuzhou 350002，China
2. State Key Laboratory of Structural Chemistry, Institute of Material Structure, Chinese Academy of Sciences, Fuzhou 350002，China |
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Abstract Five novel organic-molybdenum phosphates with [(PO4)4MoⅤ6O15]12- cluster, Na·(H4TETA)3·(H3O)5·{Zn[(HPO4)2(PO4)2Mo6O15]2} (2)，(H2en)7·(H3O)4·{Cu[(HPO4)2(PO4)2 Mo6O15]2}·H2O (3)，(H3DETA)2·(H3O)3·{Co0.5[(HPO4)2(PO4)2Mo6O15]}·H2O (4)，[Co(H3TETA)]2{Co0.5[(HPO4)(PO4)3Mo6O15]}·3.5H2O (5) and (H3DETA)·(H3O)4·{Co1.5[(HPO4)2(PO4)2Mo6O15]}·0.5H2O (6)，have been synthesized. The relationship between their properties and structures was studied by using FTIR，NIR FT-Raman，UV-Vis DRS and fluorescence etc. In these compounds, every two [(PO4)4Mo6 O15] clusters are coordinated by a metal atom to form a {M[(PO4)4Mo6 O15]2} dimer. In compound 2, 3 and 4, {M[(PO4)4Mo6 O15]2} dimers are hydrogenbonded by the organic molecules and water molecules to form a three-dimensional expended framework, respectively. In compound 5 and 6, {Co[(PO4)4Mo6 O15]2} dimers are coordinated by [Co(H3TETA)] groups and [CoO4] tetrahedra to form a network, respectively. These characteristic vibrational frequencies of the molybdenum phosphates are related to the structure of these compounds. Three characteristic bands in UV-Vis DRS spectra of these compounds have to be attributed to the absorptions of Od→Mo, Oμ→Mo and O→M charge transfer, respectively. These compounds exhibit strong fluorescence emission bands at about 410 nm when excited by 240 nm，which are caused by Oμ→Mo charge transfer.
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Received: 2002-08-26
Accepted: 2003-02-16
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Corresponding Authors:
ZHANG Han-hui
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| Cite this article: |
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ZHANG Han-hui,LIN Zheng-zhong,HUANG Chang-cang, et al. Spectroscopic Studies of Compounds with [(PO4)4MoⅤ6O15]12- Cluster [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(05): 557-560.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I05/557 |
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