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首页> 外文期刊>Journal of structural chemistry >UNUSUAL LAYER STRUCTURE IN AN ION-PAIRED COMPOUND CONTAINING TETRA(ISOTHIOCYANATE) COBALT(II) DIANION AND 4-NITROBENZYLPYRIDINIUM: CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES
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UNUSUAL LAYER STRUCTURE IN AN ION-PAIRED COMPOUND CONTAINING TETRA(ISOTHIOCYANATE) COBALT(II) DIANION AND 4-NITROBENZYLPYRIDINIUM: CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES

机译:含四(异硫氰酸盐)钴(II)离子和4-硝基苯并吡啶鎓的离子对复合物中的不寻常层结构:晶体结构和磁性

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摘要

A new ion-paired compound [4NO_2BzPy]_2[Co(NCS)_4] (1) ([4NO_2BzPy]~+ = 1-(4′-nitrobenzyl)pyridinium, NCS~– = isothiocyanate) is synthesized and characterized by elemental analysis, IR and UV-Vis spectra, ESI-MS and single crystal X-ray diffraction. Compound 1 is orthorhombic, space group Pbcn, with a = 13.188(2) ?, b = 8.458(1) ?, c = 29.281(4) ?, V = 3266.2(7) ?~3, D_(calc) = 1.468 g/cm~3, Z = 4, F(000) = 1476, R_1 = 0.0332. The [Co(NCS)_4]~(2–) anions form an unusual layer structure by S?N and S?Co interactions, while the [4NO_2BzPy]~+ cations stack into a 1D column by the p?π stacking interaction in the solid state of 1. A magnetic measurement in the range 2–300 K shows a weak antiferromagnetic exchange with θ = –2.42 K in 1.
机译:合成了一种新的离子对化合物[4NO_2BzPy] _2 [Co(NCS)_4](1)([4NO_2BzPy]〜+ = 1-(4'-硝基苄基)吡啶,NCS〜– =异硫氰酸酯)并通过元素分析进行​​了表征,IR和UV-Vis光谱,ESI-MS和单晶X射线衍射。化合物1是正交晶体,空间群Pbcn,其a = 13.188(2)α,b = 8.458(1)β,c = 29.281(4)α,V = 3266.2(7)α〜3,D_(calc)= 1.468 g / cm〜3,Z = 4,F(000)= 1476,R_1 = 0.0332。 [Co(NCS)_4]〜(2–)阴离子通过S?N和S?Co相互作用形成不寻常的层结构,而[4NO_2BzPy]〜+阳离子通过p?π堆积相互作用堆积到一维柱中。处于1的固态。在2–300 K范围内的磁测量显示θ= –2.42 K在1中的弱反铁磁交换。

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