Ligand-Mediated Regulation of the Chemical/Thermal Stability and Catalytic Performance of Isostructural Cobalt(II) Coordination Polymers
作者:Cheng-Peng Zhang、Yu-Jun Zhu、Danfeng Wang、Junfeng Qian、Yu-Pei Zhao、Cheng Lian、Zhi-Hui Zhang、Ming-Yang He、Sheng-Chun Chen、Qun Chen
DOI:10.1021/acs.inorgchem.3c02184
日期:2023.10.30
Regulating the chemical/thermal stability and catalytic activity of coordination polymers (CPs) to achieve high catalytic performance is topical and challenging. The CPs are competent in promoting oxidative cross-coupling, yet they have not received substantial attention. Here, the ligand effect of the secondary ligand of CPs for oxidative cross-coupling reactions was investigated. Specifically, four
调节配位聚合物(CP)的化学/热稳定性和催化活性以实现高催化性能是一个热门话题且具有挑战性。CPs 能够促进氧化交叉偶联,但尚未受到足够的关注。在此,研究了 CP 的第二配体对氧化交叉偶联反应的配体效应。具体来说,四个新的同构CP [Co(Fbtx) 1.5 (4-R-1,2-BDC)] n(表示为Co-CP-R,Fbtx = 1,4-bis(1,2,4-triazor-制备(1-基甲基)-2,3,5,6-四氟苯、4-R-1,2-BDC=4-R-1,2-苯二甲酸、R=F、Cl、Br、CF 3 ) 。结果发现,在苯并恶唑与仲胺的氧化胺化以及苯乙烯与苯甲醛的氧化偶联反应中,四种带有R基团的Co-CP的化学稳定性和热稳定性均遵循−CF 3 > −Br的趋势> -Cl > -F。密度泛函理论 (DFT) 计算表明,反应性的差异可能归因于取代基对这些 Co-CP 的钴 (II) 中心的电子跃迁能的影