Volume 57, Issue 48 pp. 15767-15771
Communication

Homo- and Heteroligand Poly-NHC Metal Assemblies: Synthesis by Narcissistic and Social Self-Sorting

Yi-Shou Wang

Yi-Shou Wang

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127 P. R. China

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Ting Feng

Ting Feng

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127 P. R. China

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Prof. Dr. Yao-Yu Wang

Prof. Dr. Yao-Yu Wang

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127 P. R. China

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Prof. Dr. F. Ekkehardt Hahn

Corresponding Author

Prof. Dr. F. Ekkehardt Hahn

Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstrasse 30, 48149 Münster, Germany

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Prof. Dr. Ying-Feng Han

Corresponding Author

Prof. Dr. Ying-Feng Han

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127 P. R. China

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First published: 11 October 2018
Citations: 91

Graphical Abstract

Unprecedented social self-sorting occurs during the reaction of Ag2O with two trisimidazolium salts featuring either an electron-poor H3-A1(BF4)3 or an electron-rich H3-D1(BF4)3 backbone to give the heteroligand assembly [Ag3(A1)(D1)](BF4)3 most likely driven by π⋅⋅⋅π stacking interactions between the electron-rich and electron-poor ligand backbone groups.

Abstract

Homoleptic and heteroleptic cylinder-shaped poly-NHC metallosupramolecular assemblies [Ag3(L)2](BF4)3 have been prepared by control of the shape, size, and electronic properties of disk-shaped trisimidazolium salts of type H3-L(BF4)3. Both imidazolium salts with an electron-deficient triazine backbone H3-A(BF4)3 or an electron-rich benzene backbone H3-D(BF4)3 have been employed. Reaction of H3-A(BF4)3 or H3-D(BF4)3 with Ag2O yield trinuclear homoligand complexes [Ag3(L)2](BF4)3 (L=A, D). However, equimolar mixtures of H3-A(BF4)3 and H3-D(BF4)3 react with Ag2O under social self-sorting to give the heteroligand assembly [Ag3(A)(D)](BF4)3. The same heteroligand assembly was obtained by transmetallation from mixtures of complexes [Ag3(A)2](BF4)3 and [Ag3(D)2](BF4)3. The transmetallation from [Ag3(A)(D)](BF4)3 to [Au3(A)(D)](BF4)3 is also demonstrated. The study expands to concepts of narcissistic and social self-sorting from classical Werner-type ligands to organometallic NHC chemistry thereby opening new routes for the construction of poly-NHC metal assemblies with increasing complexity.

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