New extended poly(oxomolybdophosphates) based on strontium(II) linkers

作者：Yu, Kai; Chen, Wei-Lin; Zhou, Bai-Bin^*; Li, Yang-Guang; Yu, Yang; Su, Zhan-Hua; Gao, Song; Chen, Ying

来源：CrystEngComm, 2011, 13(10): 3417-3424.

DOI：10.1039/c0ce00727g

• REDUCED MOLYBDENUM(V) PHOSPHATES
• HYDROTHERMAL SYNTHESIS
• POLYOXOMETALATE CLUSTERS
• CRYSTAL-STRUCTURE
• COORDINATION CHEMISTRY
• V PHOSPHATE
• BUILT-UP
• ZINC
• SODIUM
• TUNNEL

Four new poly(oxomolybdophosphates), Na[Fe-III(2,2'-bpy) (3)](2)[Fe-II 2Sr2MoV O-12(24)(OH)(6)(H2O)(8)(H2PO4)(2)(HPO4)(2)(PO4)(4)]center dot[PO4]center dot 9H(2)O 1, [H-2(bpp)](2)[(Mn2Sr2Mo12O24)-Sr-II(OH)(6)(H2O)(8)(H2PO4)(2)(HPO4)(2)(PO4)(4)]center dot 8H(2)O2, [H-2(4,4'-bpy)] (2)[Cd-II 2Sr2Mo12O24(OH)(6)(H2O)(6)(H2PO4)(2)(HPO4)(2)(PO4)(4)]center dot 5H(2)O 3 and [H-2(4,4'-bpy)][Mn (II) 2Sr4Mo12O24(OH)(6)(H2O)(12)(HPO4)(4)(PO4)(4)]center dot 8H(2)O(4) (2,2'-bpy 2,2'-bipyridine, bpp = 1,3-bi(4-pyridyl)-propane, 4,4'-bpy 4,4'-bipyridine), have been hydrothermally synthesized and structurally characterized by elemental analysis, TG, IR, UV-vis and single-crystal X-ray diffraction. All the compounds are based on the [P4Mo6O31](12-) (abbreviated as [P4Mo6]) polyoxometalate units, which are further connected into sandwich-type dimeric units by various transition metal (TM) ions. In compounds 1-3, the dimeric {(TM)[P4Mo6](2)} units are linked by new {Sr2TM} trinuclear fragments into one-dimensional (1-D) chains. These 1-D chains are further packed into various three-dimensional (3-D) supramolecular assemblies due to the use of different bipyridine-based structure-directing agents. In compound 4, the dimeric {(TM)[P4Mo6](2)} units are linkered by an unprecedented {Sr4Mn} pentanuclear unit into new 3-D open framework, exhibiting a 6(4).8(2)-nbo (niobium-oxide-like) topology. The electrochemical properties of these compounds were investigated.

• 出版日期2011-5
• 单位东北师范大学; 哈尔滨师范大学; 哈尔滨工业大学; 黑龙江大学