Back to Search
Start Over
Homo- and Heteroligand Poly-NHC Metal Assemblies: Synthesis by Narcissistic and Social Self-Sorting.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2018 Nov 26; Vol. 57 (48), pp. 15767-15771. Date of Electronic Publication: 2018 Nov 02. - Publication Year :
- 2018
-
Abstract
- Homoleptic and heteroleptic cylinder-shaped poly-NHC metallosupramolecular assemblies [Ag <subscript>3</subscript> (L) <subscript>2</subscript> ](BF <subscript>4</subscript> ) <subscript>3</subscript> have been prepared by control of the shape, size, and electronic properties of disk-shaped trisimidazolium salts of type H <subscript>3</subscript> -L(BF <subscript>4</subscript> ) <subscript>3</subscript> . Both imidazolium salts with an electron-deficient triazine backbone H <subscript>3</subscript> -A(BF <subscript>4</subscript> ) <subscript>3</subscript> or an electron-rich benzene backbone H <subscript>3</subscript> -D(BF <subscript>4</subscript> ) <subscript>3</subscript> have been employed. Reaction of H <subscript>3</subscript> -A(BF <subscript>4</subscript> ) <subscript>3</subscript> or H <subscript>3</subscript> -D(BF <subscript>4</subscript> ) <subscript>3</subscript> with Ag <subscript>2</subscript> O yield trinuclear homoligand complexes [Ag <subscript>3</subscript> (L) <subscript>2</subscript> ](BF <subscript>4</subscript> ) <subscript>3</subscript> (L=A, D). However, equimolar mixtures of H <subscript>3</subscript> -A(BF <subscript>4</subscript> ) <subscript>3</subscript> and H <subscript>3</subscript> -D(BF <subscript>4</subscript> ) <subscript>3</subscript> react with Ag <subscript>2</subscript> O under social self-sorting to give the heteroligand assembly [Ag <subscript>3</subscript> (A)(D)](BF <subscript>4</subscript> ) <subscript>3</subscript> . The same heteroligand assembly was obtained by transmetallation from mixtures of complexes [Ag <subscript>3</subscript> (A) <subscript>2</subscript> ](BF <subscript>4</subscript> ) <subscript>3</subscript> and [Ag <subscript>3</subscript> (D) <subscript>2</subscript> ](BF <subscript>4</subscript> ) <subscript>3</subscript> . The transmetallation from [Ag <subscript>3</subscript> (A)(D)](BF <subscript>4</subscript> ) <subscript>3</subscript> to [Au <subscript>3</subscript> (A)(D)](BF <subscript>4</subscript> ) <subscript>3</subscript> 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.<br /> (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 57
- Issue :
- 48
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 30306679
- Full Text :
- https://doi.org/10.1002/anie.201810010