Stepwise deprotonation of a thiol-functionalized bis(1,2,4-triazolium) salt as a selective route to heterometallic NHC complexes

• Verfasst von: Seitz, Stefanie Christine [VerfasserIn]
• Verfasst von: Rominger, Frank [VerfasserIn]
• Verfasst von: Straub, Bernd Franz [VerfasserIn]
• Titel: Stepwise deprotonation of a thiol-functionalized bis(1,2,4-triazolium) salt as a selective route to heterometallic NHC complexes
• Verf.angabe: Stefanie C. Seitz, Frank Rominger, and Bernd F. Straub
• E-Jahr: 2013
• Jahr: April 4, 2013
• Umfang: 8 S.
• Fussnoten: Gesehen am 17.08.2021
• Titel Quelle: Enthalten in: Organometallics
• Ort Quelle: Washington, DC : ACS Publ., 1982
• Jahr Quelle: 2013
• Band/Heft Quelle: 32(2013), 8, Seite 2427-2434
• ISSN Quelle: 1520-6041
• DOI: doi:10.1021/om400143u
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1767146132

Abstract

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.