首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >A rare two-dimensional network based on 2,2′-biimidazole bridged double [PW _(11)O _(39)Ni] ~(5-) polyanions
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A rare two-dimensional network based on 2,2′-biimidazole bridged double [PW _(11)O _(39)Ni] ~(5-) polyanions

机译:基于2,2'-联咪唑桥联的双[PW _(11)O _(39)Ni]〜(5-)聚阴离子的稀有二维网络

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摘要

A novel two-dimensional complex based on the mono-vacant Keggin anion [PW _(11)O _(39)] ~(7-), [Ni(BIIM) _3] _3[{Ni(BIIM) _2} _2(PNiW _11O _39) _2(BIIM)]·H _2O (BIIM = 2,2-biimidazole), was hydrothermally synthesized and characterized by elemental and thermo-gravimetric analysis, IR and UV spectroscopy. Each [PW _11O _39] ~(7-) anion captures an Ni ~(2+) ion forming a [PNiW _11O _39] ~(5-) polyanion, two of which are linked together by a BIIM ligand into a [(PNiW _11O _39) _2(BIIM)] ~(10-) polyanion supporting two Ni(BIIM) _2 ~(2+) units through two terminal oxygen atoms and affording a complicated [{Ni(BIIM) _2} _2(PNiW _11O _39) 2(BIIM)] ~(6-) heteropolyanion. Each of these units is further attached to four surrounding equivalent units by their own Ni(BIIM)2 2+ linkers into a two-dimensional brick wall-like network with (6,3) topology.
机译:基于单空Keggin阴离子[PW _(11)O _(39)]〜(7-),[Ni(BIIM)_3] _3 [{Ni(BIIM)_2} _2(通过水热合成PNiW _11O _39)_2(BIIM)]·H _2O(BIIM = 2,2-联咪唑),并通过元素和热重分析,红外光谱和紫外光谱对其进行表征。每个[PW _11O _39]〜(7-)阴离子捕获一个Ni〜(2+)离子,形成[PNiW _11O _39]〜(5-)聚阴离子,其中两个通过BIIM配体连接在一起形成[[PNiW _11O _39)_2(BIIM)]〜(10-)聚阴离子通过两个末端氧原子支撑两个Ni(BIIM)_2〜(2+)单元,并提供复杂的[{Ni(BIIM)_2} _2(PNiW _11O _39) 2(BIIM)]〜(6-)杂多阴离子。这些单元中的每一个通过它们自己的Ni(BIIM)2 2+连接器进一步连接到四个周围的等效单元,成为具有(6,3)拓扑的二维砖墙状网络。

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