0-D and 1-D inorganic-organic composite polyoxotungstates constructed from in-situ generated monocopper-substituted Keggin polyoxoanions and copper-organoamine complexes |
| |
| Authors: | Jun-Wei Zhao |
| |
| Institution: | State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of the Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China |
| |
| Abstract: | Combination of in-situ generated monocopperII-substituted Keggin polyoxoanions with copperII-organoamine complexes under hydrothermal conditions results in seven inorganic-organic composite polyoxotungstates Cu(en)2(H2O)]2{Cu(en)2]α-PCuW11O39Cl]}·3H2O (1), {Cu(en)2(H2O)]Cu(en)2]2α-PCuW11O39Cl]}·6H2O (2), {Cu(en)2(H2O)]2Cu(en)2]α-XCuW11O39]}·5H2O (3/4, X=SiIV/GeIV), {Cu(deta)(H2O)2]2Cu(deta)(H2O)]α-XCuW11O39]}·5H2O (5/6, X=GeIV/SiIV) and Cu(dap)2]2{Cu(dap)2]2Cu(dap)2]α-PCuW11O39]2} (7) (en=ethylenediamine, dap=1,2-diaminopropane and deta=diethylenetriamine). 1 is an isolated structure whereas 2 is a 1-D chain structure, but both contain α-PCuW11O39Cl]6− polyoxoanions. 3-6 contain the 1-D linear chains made up of α-XCuW11O39]6− polyoxoanions in the pattern of -A-A-A- (A=α-XCuW11O39]6−), while 7 demonstrates the first 1-D zigzag chain constructed from α-PCuW11O39]210− polyoxoanions via Cu(en)2]2+ bridges in the pattern of -A-B-A-B- (A=α-PCuW11O39]210−, B=Cu(en)2]2+). The successful syntheses of 1-7 can provide some experimental evidences that di-/tri-/hexa-vacant polyoxoanions can be transformed into mono-vacant Keggin polyoxoanions under hydrothermal conditions. |
| |
| Keywords: | Polyoxometalate Hydrothermal reaction Copper Keggin structure Organoamine |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
