Copper-hydride nanoclusters with enhanced stability by N- heterocyclic carbenes
作者机构:State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy MaterialsNational&Local Joint Engineering Research Center of Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Departments of Physics and ChemistryNanoscience CenterUniversity ofjyvdskyldFI-40014 JyvdskyldFinland
出 版 物:《Nano Research》 (纳米研究(英文版))
年 卷 期:2021年第14卷第9期
页 面:3303-3308页
核心收录:
学科分类:0808[工学-电气工程] 081704[工学-应用化学] 0809[工学-电子科学与技术(可授工学、理学学位)] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 0702[理学-物理学]
基 金:the National Key R&D Program of China(No.2017YFA0207302) the National Natural Science Foundation of China(Nos.21890752,21731005,21420102001,and 21721001)and the 111 Project(No.B08027)for financial support supported by the Academy of Finland through HHs Academy Professorship and grants 292352,319208
主 题:metal clusters copper-hydride N-hetercxylic carbene stability superatom
摘 要:Copper-hydrides have been intensively studied for a long time due to their utilization in a variety of technologically important chemical ***,poor stability of the species severely hinders its isolation,storage and operation,which is worse for nano-sized *** report here an unprecedented strategy to access to ultrastable copper-hydride nanoclusters(NCs),namely,using bidentate N-heterocyclic carbenes as stabilizing ligands in addition to *** this work,a simple synthetic protocol was developed to synthesize the first large copper-hydride nanoclusters(NCs)stabilized by N-heterocyclic carbenes(NHCs).The NC,with the formula of Cu3i(RS)25(NHC)3H6(NHC=1,4-bis(1-benzyl-1 H-benzimidazol-1-ium-3-yl)butane,RS=4-fluorothiophenol),was fully characterized by high resolution Fourier transform ion cyclotron resonance mass spectrum,nuclear magnetic resonance,ultra-violet visible spectroscopy,density functional theory(DFT)calculations and single-crystal X-ray ***,the title cluster exhibits unprecedented Cu4 tetrahedron-based vertex-sharing(TBVS)superstructure(fusion of six Cu4 tetrahedra).Moreover,the ultrahigh thermal stability renders the cluster a model system to highlight the power of NHCs(even other carbenes)in controlling geometrical,electronic and surface structure of polyhydrido copper clusters.