Quest for a Desolvated Structure Unveils Breathing Phenomena in a MOF Leading to Greener Catalysis in a Solventless Setup: Insights from Combined Experimental and Computational Studies
作者:Sarita Kumari、Anand Yadav、Ankita Kumari、Somanath Mahapatra、Devender Kumar、Jyoti Sharma、Preety Yadav、Dibyajyoti Ghosh、Anindita Chakraborty、Prakash Kanoo
DOI:10.1021/acs.inorgchem.3c04062
日期:2024.4.22
crystal structure of the metal–organic framework (MOF), Mn2(1,4-bdc)2(DMF)2}n (1) (1,4-bdcH2, 1,4-benzenedicarboxylic acid; DMF, N,N-dimethylformamide), is known for a long time; however, its desolvated structure, Mn2(1,4-bdc)2}n (1′), is not yet known. The first-principles-based computational simulation was used to unveil the structure of 1′ that shows the expansion in the framework, leading to pore
金属有机骨架(MOF)的晶体结构,Mn 2 (1,4-bdc) 2 (DMF) 2 } n ( 1 ) (1,4-bdcH 2 , 1,4-苯二甲酸;DMF, N , N-二甲基甲酰胺),早已为人所知;然而,其去溶剂化结构Mn 2 (1,4-bdc) 2 } n ( 1' ) 尚不清楚。基于第一性原理的计算模拟被用来揭示1′的结构,该结构显示了框架的扩展,导致在去除配位的DMF分子后孔打开。我们在氰基甲硅烷基化和CO 2环加成反应的结构中使用了包含开放金属位点(OMS) 的1' ,并在无溶剂装置中记录了完全转化。 1'处的孔开口允许小醛分子轻松扩散到通道中,从而实现完全转化。与较大醛、2-萘醛和9-蒽甲醛的反应也显示出 99.9% 的转化率,这是迄今为止在无溶剂条件下报道的最高转化率。计算机模拟表明,较大的醛与表面上的 Mn(II) OMS 相互作用,从而实现更紧密的相互作用并促进完全