基于双苯并咪唑仲醇串联合成Co4簇合物及固液结构相关性研究  

Construction and Solid-Liquid Structure Correlation of Co4 Clusters Based on Bisbenzimidazole Secondary Alcohol Ligands

作　　者：张蓝贝 罗美莲 Zhang Lanbei;Luo Meilian(College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China)

机构地区：[1]湖北大学化学化工学院,湖北武汉430062

出　　处：《广东化工》2023年第1期19-22,共4页Guangdong Chemical Industry

摘　　要：3d过渡金属簇合物因其迷人的结构和潜在的应用,受到越来越多化学家的关注。基于此,我们采用1,2-双(1H-苯并[d]咪唑-2-基)乙-1-醇(HL)作为研究的配体,合成出两例结构新颖的簇合物。分别为簇合物1[Co_(4)(L)_(4)Cl_(2)])(Cl_(2))和簇合物2([Co_(4)(L)_(4)Cl_(2)])(Cl_(2))。发现簇合物1是第一例氯桥连的Co_(4)O_(4)缺位立方烷。采用X-射线单晶衍射确定了簇合物1和2的结构,通过高分辨质谱(ESI-MS)获得了簇合物1和2在反应溶剂中的质谱片段,提出了可能的碎裂规律,为揭示可能的组装机理提供了重要信息。同时对簇合物1和2的OER电化学性质做了初步研究,发现簇合物1的过电势达到了322 mV,具有较好的OER电催化性能。3d transition metal clusters have attracted more and more attention from chemists because of their fascinating structures and potential applications.Based on this,we used 1,2-bis(1H-benzo[d]imidazol-2-yl)ethan-1-ol(HL)as the research ligand to synthesize two novel clusters:1([Co_(4)(L)_(4)Cl_(2)])(Cl_(2)),2([Co_(4)(L)_(4)Cl_(2)])(Cl_(2)),respectively.Cluster 1 was found to be the first example of a chloro-bridged Co_(4)O_(4)vacant cubane configuration.The structure of the cluster complexes was determined by single crystal diffractometer and combined with high-resolution mass spectrometry ESI-MS,and the possible assembly mechanism was revealed by analyzing the fragmentation law of these clusters under mass spectrometry conditions and the changing law of species.At the same time,the OER electrochemical properties of clusters 1 and 2 were preliminarily studied,and it was found that the two cobalt cluster’s overpotential of cluster 1 reached 322 mV,showing good OER electrocatalytic performance.

关 键 词：串联反应 3d过渡金属簇合物 固液结构相关性 晶体学 电喷雾离子化质谱 

分 类 号：TQ[化学工程]