Synthesis and use of trans-dichlorido-tetrakis-(N-R-imidazole)nickel(II) complexes in Kumada-Tamao-Corriu cross-coupling reactions

SAHIN N., EL MOLL H., SEMERIL D., MATT D., ÖZDEMİR İ., KAYA C., ...More

POLYHEDRON, vol.30, no.12, pp.2051-2054, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 12
  • Publication Date: 2011
  • Doi Number: 10.1016/j.poly.2011.05.009
  • Journal Name: POLYHEDRON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2051-2054
  • Keywords: Imidazole ligands, Nickel, Kumada-Tamao-Corriu, Cross-coupling, PALLADIUM(II) COMPLEXES, CATALYTIC SYNTHESIS, CRYSTAL-STRUCTURES, GRIGNARD-REAGENTS, PD(II) COMPLEXES, II COMPLEXES, C-C, LIGANDS, EPOXIDATION, OLEFINS
  • Inonu University Affiliated: Yes

Abstract

Two dichlorido-tetrakis-(N-R-imidazole)nickel(II) complexes (R = 2,6-diisopropylphenyl (1): methyl (2)) have been synthesised. A single crystal X-ray diffraction study was carried out for 1, which revealed a centrosymmetric complex with the nickel centre placed in an octahedral coordination environment. Both complexes showed high activities (TOFs up to 60200 mol(ArBr) mol(Ni)(-1) h(-1)) in Kumada-Tamao-Corriu cross-coupling of arylhalides with arylgrignards. No significant differences in activity were observed between the two complexes. (C) 2011 Elsevier Ltd. All rights reserved.