Synthesis, Structure Characterization and Biological Activity of a Novel Polyoxovanadate Cluster: [NH3(CH2)2NH2(CH2)2NH3]4·[V6ⅤV12ⅣO42(PO4)](PO4)·2H2O

Abstract

Abstract: A new polyoxovanadate cluster,[NH₃(CH₂)₂NH₂(CH₂)₂NH₃]₄[V₆^ⅤV₁₂^ⅣO₄₂(PO₄)](PO₄)·2H₂O, has been synthesized and characterized by means of elemental analysis, IR spectrometry, EPR spectrometry, TG analysis and single crystal X-ray diffraction. This compound crystallizes in a monoclinic space group C2/c with a=2.3912(5) nm, b=1.3002(3) nm, c=2.0172(4) nm, β=105.75(3)°, V=6.036(2) nm³, Z=2, R₁=0.0572, wR₂=0.1476. It has a superKeggin structure with a Keggin unit capped by six [VO₅] moieties on the pits on every side of the Keggin unit. The anti-tumor activity of the compound was estimated in three human tumor cell lines in vitro.

Key words: Polyoxovanadate, Keggin structare, Crystal structure, Anti-tumor activity

FU Ping-ping, WANG Xin-long, WANG En-bo, QIN Chao, XU Lin. Synthesis, Structure Characterization and Biological Activity of a Novel Polyoxovanadate Cluster: [NH₃(CH₂)₂NH₂(CH₂)₂NH₃]₄·[V₆^ⅤV₁₂^ⅣO₄₂(PO₄)](PO₄)·2H₂O[J]. Chemical Research in Chinese Universities, 2005, 21(4): 381-385.

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Synthesis, Structure Characterization and Biological Activity of a Novel Polyoxovanadate Cluster: [NH₃(CH₂)₂NH₂(CH₂)₂NH₃]₄·[V₆^ⅤV₁₂^ⅣO₄₂(PO₄)](PO₄)·2H₂O

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