期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 48, 页码 15767-15771出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201810010
关键词
polycarbenes; self sorting; supramolecular chemistry; transmetallation
资金
- NSFC [21722105, 21531007, 21771146]
- National Youth Top-notch Talent Support Program of China
- Scientific Research Foundation for the Returned Overseas Scholars of Shaanxi Province [2017001]
- Shaanxi Key Laboratory of Physical-inorganic Chemistry [17JS133]
- Top-rated Discipline Construction Scheme of Shaanxi Higher Education
- FM & EM International Joint Laboratory of Northwest University
- DFG [SFB 858, IRTG 2027]
Homoleptic and heteroleptic cylinder-shaped poly-NHC metallosupramolecular assemblies [Ag-3(L)(2)](BF4)(3) have been prepared by control of the shape, size, and electronic properties of disk-shaped trisimidazolium salts of type H-3-L(BF4)(3). Both imidazolium salts with an electron-deficient triazine backbone H-3-A(BF4)(3) or an electron-rich benzene backbone H-3-D(BF4)(3) have been employed. Reaction of H-3-A(BF4)(3)or H-3-D(BF4)(3) with Ag2O yield trinuclear homoligand complexes [Ag-3(L)(2)](BF4)(3) (L= A, D). However, equimolar mixtures of H-3-A(BF4)(3) and H-3-D(BF4)(3) react with Ag2O under social self-sorting to give the heteroligand assembly [Ag-3(A)(D)](BF4)(3). The same heteroligand assembly was obtained by transmetallation from mixtures of complexes [Ag-3(A)(2)](BF4)(3) and [Ag-3(D)(2)](BF4)(3). The transmetallation from [Ag-3(A)(D)](BF4)(3) to [Au-3(A)(D)](BF4)(3) is also demonstrated. The study expands to concepts of narcissistic and social self-sorting from classical Werner-type ligands to organonzetallic NHC chemistry thereby opening new routes for the construction of poly-NHC metal assemblies with increasing complexity.
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