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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Semi-vacant Wells-Dawson anions.Synthesis of tri-tungsten-vacant derivatives and crystallographic studies of [alphabetabetaalpha-(Cu~(II)OH_2)_2(Cu~(II))_2(AsW_(15)(OH_2)_3(OH)O_(52))_2]~(12-)
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Semi-vacant Wells-Dawson anions.Synthesis of tri-tungsten-vacant derivatives and crystallographic studies of [alphabetabetaalpha-(Cu~(II)OH_2)_2(Cu~(II))_2(AsW_(15)(OH_2)_3(OH)O_(52))_2]~(12-)

机译:半空的Wells-Dawson阴离子。三钨空位衍生物的合成和[alphabetabetaalpha-(Cu〜(II)OH_2)_2(Cu〜(II))_ 2(AsW_(15)(OH_2)_3( OH)O_(52))_ 2]〜(12-)

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摘要

The tri-tungsten-vacant polyoxometalate,[alpha-AsW_(15)(OH)_4 O_(52)]~(13-) ,derived from the semi-vacant Wells-Dawson complex [alpha-AsW_(18)(OH)_4O_(58)]~(7-),reacts with the late-transition metal cations,Cu(II) or Zn(II),to form sandwich-type species;the X-ray crystal structure of [alphabetabetaalpha-(Cu~(II)OH_2)_2-(Cu~(II))_2(AsW_(15)(OH_2)_3(OH)O_(52))_2]~(12-) ,prepared by the acidification of [alphabetabetaalpha-(Cu~(II)OH_2)_2(Cu~(II))_2(AsW_(ls)(OH)_4O_(52))_2]~(18-),reveals that the missing heteroatoms are distal to the central Cu_4 unit and the vertices of the vacant tetrahedron are occupied by one OH~- and three OH_2 groups.
机译:来自半空的Wells-Dawson络合物[alpha-AsW_(18)(OH)的三钨空的多金属氧酸盐[α-AsW_(15)(OH)_4 O_(52)]〜(13-) _4O_(58)]〜(7-)与后期过渡金属阳离子Cu(II)或Zn(II)反应形成夹心型物质; [αbetabetaalpha-(Cu〜 (II)OH_2)_2-(Cu〜(II))_ 2(AsW_(15)(OH_2)_3(OH)O_(52))_ 2]〜(12-),通过酸化[alphabetabetaalpha-(Cu 〜(II)OH_2)_2(Cu〜(II))_ 2(AsW_(ls)(OH)_4O_(52))_ 2]〜(18-),表明缺失的杂原子位于中心Cu_4单元的远端,并且空四面体的顶点被一个OH〜-和三个OH_2基占据。

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