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首页> 外文期刊>Crystal growth & design >Halogen center dot center dot center dot Halogen Interactions in the Assembly of High-Dimensional Supramolecular Coordination Polymers Based on 3,5-Diiodobenzoic Acid
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Halogen center dot center dot center dot Halogen Interactions in the Assembly of High-Dimensional Supramolecular Coordination Polymers Based on 3,5-Diiodobenzoic Acid

机译:基于3,5-二碘苯甲酸的高维超分子配位聚合物组装过程中的卤素相互作用

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摘要

The synthesis and determination of the crystal structures of eight mixed-ligand divalent coordination polymers based on 3,5-diiodobenzoic acid (HL) and ancillary nitrogen ligands (bpy = 4,4'-bipyridine, bpe = 1,2-bis(4-pyridyl)ethene, p-bix = 1,4-bis(imidazol-1-ylmethyl)-benzene, bpp = 1,3-bi(4-pyridyl)propane, bbi = 1,1'-(1,4-butanediyl)bis(imidazole), namely, [Zn(L)(2)(p-bix)](n) (1), [Zn-3(L)(6)(bpp)](n) (2), [Cd-1.5(L)(3)(bpp)](n) (3), [Ni(L)(2)(bpe)center dot H2O](n) (4), [Co(L)(2)(p-bix)](n) (5), [Co-1.5(L)(3)(bpy)(0.5)](n) (6), [Mn-3(L)(6)(bpe)](n) (7), and [Mn-3(L)(6)(bbi)](n) (8), have been reported. They were well characterized by elemental analysis, IR spectra, and single crystal X-ray diffraction. Compounds 1-5 all exhibit three-dimensional (3D) supramolecular structures based on interchain type II I center dot center dot center dot I halogen bond interactions, or hydrogen bonding and type I I center dot center dot center dot I contacts, respectively. Moreover, pi center dot center dot center dot pi interactions are found in the structure of 3. In compounds 6-8, similar two-dimensional (2D) metal-organic layers are expanded to 3D supramolecular structures based on type II I center dot center dot center dot I halogen bond interactions or type I I center dot center dot center dot I contacts, respectively. Our structural analyses promise to help demonstrate that organic iodine prefers type II I center dot center dot center dot I halogen bond interactions. In addition, it is of importance to evaluate the contributing role of I center dot center dot center dot I halogen bonds or I center dot center dot center dot I contacts in crystal structure packing. In addition, their thermal analysis, X-ray powder diffraction, and UV-vis absorption spectra have been investigated as well.
机译:基于3,5-二碘苯甲酸(HL)和辅助氮配体(bpy = 4,4'-联吡啶,bpe = 1,2-bis(4)的八种混合配体二价配位聚合物的合成和晶体结构的确定-吡啶基)乙烯,对-bix = 1,4-双(咪唑-1-基甲基)苯,bpp = 1,3-二(4-吡啶基)丙烷,bbi = 1,1'-(1,4-丁二基)双咪唑,即[Zn(L)(2)(p-bix)] [n)(1),[Zn-3(L)(6)(bpp)] [n)(2) ,[Cd-1.5(L)(3)(bpp)](n)(3),[Ni(L)(2)(bpe)中心点H2O](n)(4),[Co(L)( 2)(p-bix)](n)(5),[Co-1.5(L)(3)(bpy)(0.5)](n)(6),[Mn-3(L)(6)( bpe)](n)(7)和[Mn-3(L)(6)(bbi)](n)(8)已有报道,通过元素分析,红外光谱和单晶对它们进行了很好的表征。 X射线衍射。化合物1-5均显示基于链间II型I中心点中心点中心点I卤素键相互作用或氢键和II型中心点中心点中心点I触点的三维(3D)超分子结构分别是pi center在3的结构中发现t中心点中心点pi相互作用。在化合物6-8中,基于II型I将相似的二维(2D)金属有机层扩展为3D超分子结构I中心点中心点中心点I卤素键相互作用或II型中心点中心点中心点I触点。我们的结构分析有望帮助证明有机碘更喜欢II型中心点中心点中心点I点卤素键的相互作用。另外,重要的是评价I中心点中心点中心点中心点I卤素键或I中心点中心点中心点I接触点在晶体结构填充中的作用。此外,还对它们的热分析,X射线粉末衍射和UV-vis吸收光谱进行了研究。

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