作者:Tony D. Keene、Damien Rankine、Jack D. Evans、Peter D. Southon、Cameron J. Kepert、Jade B. Aitken、Christopher J. Sumby、Christian J. Doonan
DOI:10.1039/c3dt00096f
日期:——
Dynamically porous metal-organic frameworks (MOFs) with a chiral quartz-based structure have been synthesized from the multidentate ligand 2,2′-dihydroxybiphenyl-4,4′-dicarboxylate (H2diol). Compounds [Ni(II)(H2diol)(S)2]·xS (where S = DMF or DEF) show marked changes in 77 K N2 uptake between partially desolvated [Ni(II)(H2diol)(S)2] (only the pore solvent is removed) and fully desolvated [Ni(II)(H2diol)] forms
由多齿配体2,2'-二羟基联苯-4,4'-二羧酸酯(H 2二醇)合成了具有手性石英基结构的动态多孔金属有机骨架(MOF )。化合物[镍(II)(H 2二醇)(S)2 ]· X S(其中S = DMF或DEF)显示出显着的77 KN变化2摄取之间部分去溶剂化的[镍(II)(H 2二醇)(S )2 ](仅除去孔溶剂)并形成完全脱溶剂的[Ni(II)(H 2二醇)]形式。此外,[Ni(II)(H 2二醇)(DMF)2]通过附着在Ni(II)中心的轴向配位位点上的DMF分子的旋转显示出更多的溶剂依赖性孔隙率。[Ni(II)(H 2二醇)]中四坐标Ni(II)中心的独特特征是对其化学环境的动态响应。[Ni(II)(H 2二醇)]暴露于高氧2 和 甲醇 蒸气导致镍中心的两个轴向位点的协调并导致溶剂化骨架的产生,而暴露于 乙醇,DMF, 丙酮,MeCN不会导致金属配位或结构指标发生任何变化。 甲醇由于溶