具有两个多孔相的六氟锆酸盐柱状配位网络中气体吸收和选择性的微调

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2025-02-07 DOI:10.1039/D4CE01250J

Nathan C. Harvey-Reid, Hayley S. Scott, Komal M. Patil, Naveen Kumar, Colm Healy, Michael J. Zaworotko, Soumya Mukherjee and Paul E. Kruger

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引用次数: 0

摘要

混合配位网络由二价过渡金属离子和有机和无机连接配体的组合维持，是一类新兴的吸附剂，用于吸附气体和蒸汽捕获，特别是在微量（≤1%）浓度下。在这里，我们报道了一个Cu（II）杂化配位网络，使用阴离子柱六氟锆酸盐ZrF62−，[Cu(pypz)2ZrF6]n；zrf6 -21- cu（21 = 4-（3,5-二甲基- 1h -吡唑-4-基）吡啶）。zrf6 -21- cu具有两种超微孔相，即二维方形晶格相（α）和三维原始立方单元相（β），这在杂化超微孔材料中是罕见的。有趣的是，zrf6 -21- cu -α对C2H2的选择性优于CO2， zrf6 -21- cu -β对C2H2的选择性优于C2H4。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Fine-tuning of gas uptake and selectivity in a hexafluorozirconate pillared coordination network that features two porous phases†

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Fine-tuning of gas uptake and selectivity in a hexafluorozirconate pillared coordination network that features two porous phases†

Hybrid coordination networks, sustained by divalent transition metal ions and a combination of organic and inorganic linker ligands, are an emerging class of physisorbents for adsorptive gas and vapour capture, especially under trace (≤1%) concentrations. Herein, we report a Cu(II) hybrid coordination network using the anionic pillar hexafluorozirconate ZrF₆²⁻, [Cu(pypz)₂ZrF₆]_n; ZRFSIX-21-Cu (21 = 4-(3,5-dimethyl-1H-pyrazol-4-yl)pyridine). ZRFSIX-21-Cu possesses two ultramicroporous phases, a two-dimensional square lattice phase (α), and a three-dimensional primitive cubic unit phase (β), a rarity among hybrid ultramicroporous materials. Interestingly, ZRFSIX-21-Cu-α revealed better selectivity for C₂H₂ over CO₂, and ZRFSIX-21-Cu-β for C₂H₂ over C₂H₄.