Synthesis, structural characterization and properties of a novel 1D helical chain arsenomolybdate {[Cu(en)₂][Cu(en)(H₂O)][(Cu(en)₂(H₂O)] [As^IIIAs^VMo₉O₃₄)]} ¡¤

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• 作者：Qiuxia Han^a ; ^{hdhqx@henu.edu.cn} ; Hongxia Cao^c ; Pengtao Ma^b ; Junwei Zhao^b ; ; Jingyang Niu^b ; ^{jyniu@henu.edu.cn}
• 关键词：Arsenomolybdate ; Polyoxometalate ; Helical chain ; Circular dichroism spectrum
• 刊名：Inorganic Chemistry Communications
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：28
• 期：Complete
• 页码：7-11
• 全文大小：785 K

文摘

An organic-inorganic hybrid 1D helical chain arsenomolybdate {[Cu(en)₂][Cu(en)(H₂O)][(Cu(en)₂(H₂O)] [As^IIIAs^VMo₉O₃₄)]} ¡¤ 2H₂O (1) (en = ethylenediamine) has been hydrothermally synthesized and characterized by elemental analyses, IR, UV and CD spectrum, powder X-ray diffraction, TG-DTA and single-crystal X-ray diffraction. The asymmetric unit of 1 consists of a monocapped trivacant Keggin [As^IIIAs^VMo₉O₃₄]^6 ? subunit, a pendant [Cu(en)₂(H₂O)]^2 + cation, a pendant [Cu(en)(H₂O)]^2 + cation, one bridging [Cu(en)₂]^2 + cation and two lattice water molecules. It should be noted that 1 illustrates a one-dimensional (1D) helical chain assembled by {[Cu(en)(H₂O)][(Cu(en)₂(H₂O)][As^IIIAs^VMo₉O₃₄)]}^2 ? clusters and [Cu(en)₂]^2 + linkers.