Stepwise deprotonation of a thiol-functionalized bis(1,2,4-triazolium) salt as a selective route to heterometallic NHC complexes
Heterometallic NHC complexes have been selectively prepared at room temperature directly from an azolium salt in a two-step procedure. In the unsymmetrically substituted bis(1,2,4-triazolium) ligand precursor, one of the m-xylylene-bridged triazolium units features an unprotected o-thiophenol substi...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
April 4, 2013
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| In: |
Organometallics
Year: 2013, Volume: 32, Issue: 8, Pages: 2427-2434 |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/om400143u |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om400143u
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| Author Notes: | Stefanie C. Seitz, Frank Rominger, and Bernd F. Straub |
| Summary: | Heterometallic NHC complexes have been selectively prepared at room temperature directly from an azolium salt in a two-step procedure. In the unsymmetrically substituted bis(1,2,4-triazolium) ligand precursor, one of the m-xylylene-bridged triazolium units features an unprotected o-thiophenol substituent. This renders possible a selective deprotonation and in situ monopalladation at the NHC-thiolato unit. The obtained palladium(II) complex possesses two pendant triazolium units as vacant binding sites. After a second deprotonation/metalation step, a heterodinuclear palladium(II) gold(I) complex and a heterotrinuclear palladium(II) dicopper(I) complex were obtained. In the latter, two metal centers are connected via a thiolato bridge. |
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| Item Description: | Gesehen am 17.08.2021 |
| Physical Description: | Online Resource |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/om400143u |