Self-assembly of four three-dimensional reduced molybdenum(V) phosphates decorated with transitional metal complexes
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- 作者：Ying Ma ; Yangguang Li ; Enbo Wang ; Ying Lu ; Xinlong Wang ; Dongrong Xiao ; Xinxin Xu
- 关键词：Polyoxometalates ; Reduced molybdenum(V) phosphates ; Transitional metal complexes ; Hydrothermal synthesis
- 刊名：Inorganica Chimica Acta
- 出版年：2007
- 出版时间：1 February 2007
- 年：2007
- 卷：360
- 期：2
- 页码：421-430
- 全文大小：690 K
文摘
Four new three-dimensional materials built from reduced molybdenum(V) phosphates as building blocks and transitional metal (Co, Zn and Cd) complexes as linkers, (Hbpy)2[Co(bpy)(H2O)]2[Co(H2PO4)2 (HPO4)6(MoO2)12(OH)6] (1), [Co(H2O)4]2[Co(Hbpy)(H2O)]2[Co(bpy)][Co(HPO4)4(PO4)4(MoO2)12(OH)6] · 6H2O (2), Na2[Zn(Hbpy)(H2O)2]2[Zn(Hbpy)]2[Zn(HPO4)2(PO4)6(MoO2)12(OH)6] · 4H2O (3), (H2bpy)2[Cd(bpy)(H2O)]2[Cd(bpy)(H2O)2]2[Cd(HPO4)4(PO4)4(MoO2)12(OH)6] · 2H2O (4) (bpy = 4,4′-bipyridine), have been synthesized and characterized by elemental analyses, IR, TG, and single crystal X-ray diffraction. The 3-D framework of 1 is constructed from Co[P4Mo6]2 dimers bonded together with [Co(bpy)]n coordination polymer chains. In compound 2, the Co[P4Mo6]2 dimers are linked by both [Co(bpy)] complex chains and the cobalt dimers to form a 3-D framework. Compounds 1 and 2 represent the first examples of reduced molybdenum(V) phosphates decorated with transition metal complexes chains. The 3-D framework of 3 is constructed from Zn[P4Mo6]2 dimers bonded together with [Zn(bpy)] coordination complexes and [Zn(bpy)(H2O)2] complexes. In compound 4, the Cd[P4Mo6]2 dimers are coordinated with [Cd(bpy)(H2O)] and [Cd(bpy)(H2O)2] complexes to construct a 3-D structure. To our best knowledge, it is the first time that linear ligand 4,4′-bpy molecules have been grafted into the backbone of reduced molybdenum phosphates. Furthermore, the magnetic properties of compounds 1 and 2 are reported.