A porous Zn(II)-coordination polymer, namely {[Zn₂(μ₈-abtc)(betib)]·DMF}_n (1), was solvothermally synthesized from 3,3′,5,5′-azobenzenetetracarboxylate (abtc⁴⁻) and 1,4-bis(2-ethylimidazol-1-yl)butane (betib) ligands and {[Zn₂(μ₈-abtc)(betib)]·H₂O}_n (2) was obtained through the immersion of 1 in methanol. Compounds 1 and 2 were structurally characterized via numerous techniques. Both compounds displayed a 3D porous framework with a 3,6-connected sqc5381 net. Compound 2a obtained at 140 °C from 2 exhibited gas and iodine adsorption properties. Interestingly, the compound adsorbed selectively CO₂ with the uptake capacity of 54.02 cm³ g⁻¹ (13.26%) over N₂ (5.43 cm³ g⁻¹) and CH₄ (14.53 cm³ g⁻¹) at 273 K. The compound also adsorbed iodine with the weights of 19.99% and 30.26% in solution and vapor phases, respectively. The single crystal X-ray result and Raman spectra showed the presence of iodine units in the pores of the framework.

中文翻译：

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基于四羧酸的多孔Zn（ii）配位聚合物，表现出选择性的CO2吸附和碘吸收。

一种多孔的Zn（II）-coordination聚合物，即{[锌₂（μ ₈ -abtc）（betib）]·DMF} _Ñ（1）中，溶剂热从3,3'，合成5,5'- azobenzenetetracarboxylate（ABTC ^4-）和1,4-双（2-乙基咪唑-1-基）丁烷（betib）配体和{[锌₂（μ ₈ -abtc）（betib）]·H ₂ ö} _ñ（2），得到通过将1浸入甲醇中。化合物1和2进行了结构表征通过众多技术。两种化合物均显示具有3,6-连接的sqc5381网的3D多孔框架。在140°C下从2中获得的化合物2a表现出气体和碘吸附特性。有趣的是，该化合物选择性吸附CO ₂的吸收能力超过N ₂（5.43 cm ³ g ^-1）和CH ₄（14.53 cm ³ g ^-1）的吸收能力为54.02 cm ³ g ^-1（13.26％）。）在273 K时。该化合物还吸附了分别在溶液相和气相中重量分别为19.99％和30.26％的碘。单晶X射线结果和拉曼光谱表明，在骨架的孔中存在碘单元。