Planar {Ni6} Cluster-Containing Polyoxometalate-based Inorganic–Organic Hybrid Compound and Its Extended Structure

Two
{Ni6} cluster-containing inorganic–organic
hybrid compounds have been successfully synthesized in the presence
of organic amine under hydrothermal conditions, and they were characterized
by powder and single-crystal X-ray diffraction, elemental analysis,
thermogravimetric analysis, and IR spectroscopy. Structural analysis
indicates that [Ni0.5(H2O)3]­[{Ni6(μ3-OH)3­en­(H2O)10}­(H2P2W15O56)]·10H2O (1, en = ethylenediamine)
is a triangular inorganic {Ni6} cluster substituted polyoxotungstate
with only one en to stabilize the {Ni6} cluster. However,
[Ni­(dap)2]­{[Ni1.5(dap)1.5­(H2O)3]­[Ni6(μ3-OH)3­(dap)2(en)­(H2O) ​{O2C­(CH2)2CO2}0.5­(CH3COO)­(P2W15O56)]}·​15H2O (2, dap =
1,2-diaminopropane) is a three-dimensional inorganic–organic
hybrid compound linked by succinic acid. The magnetic properties of
both compounds were studied. In addition, the adsorption properties
of compound 2 have also been investigated.

在有机胺的存在下，已成功合成了包含Ni6簇的无机-有机杂化化合物，并在水热条件下进行表征，包括粉末和单晶X射线衍射、元素分析、热重分析和红外光谱。结构分析表明，[Ni0.5(H2O)3]­[{Ni6(μ3-OH)3-en-(H2O)10}-(H2P2W15O56)]·10H2O（1，en=乙二胺）是一种仅含有一个en基团以稳定Ni6簇的三角无机Ni6簇取代多钨酸盐。然而，[Ni-(dap)2]­{[Ni1.5(dap)1.5-(H2O)3]-[Ni6(μ3-OH)3-(dap)2(en)-(H2O) {O2C-(CH2)2CO2}0.5-(CH3COO)-(P2W15O56)]}·15H2O（2，dap=1,2-二氨基丙烷）是一种通过琥珀酸连接的三维无机-有机杂化化合物。两种化合物的磁学性质得到了研究。此外，化合物2的吸附性质也进行了探究。