Bicyclic N-heterocyclic carbene (NHC) ligand precursors and their palladium complexes

Guemuesada R., Guenay M. E., Özdemir N., Cetinkaya B.

JOURNAL OF COORDINATION CHEMISTRY, vol.69, no.9, pp.1463-1472, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 9
  • Publication Date: 2016
  • Doi Number: 10.1080/00958972.2016.1185780
  • Journal Name: JOURNAL OF COORDINATION CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1463-1472
  • Keywords: Chiral bicyclic N-heterocyclic carbene, expanded ring N-heterocyclic carbene, PEPPSI-type palladium complex, camphoric acid, X-ray diffraction, RHODIUM COMPLEXES, CATALYSTS
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

Eight bicyclic amidinium precursors (3), prepared from R,S-tmcp (R,S-tmcp: (1R,3S)-diamino-1,2,2-trimethylcyclopentane) were described. Only five of the precursors (3a-e) could be converted to palladium complexes, (PdX2(6,7-NHC)PEPPSI) (4) by treatment with PdCl2, K2CO3, and pyridine (additional KBr was used for (PdBr2(6,7-NHC)PEPPSI)). The salts and complexes were fully characterized by spectroscopic methods and X-ray crystallography.