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Synthesis and characterization of nickel-N-heterocyclic carbenes linked to a calix[6]arene platform and their applications in Suzuki-Miyaura cross-coupling catalysis
- Source :
- Inorganica Chimica Acta. 505:119494
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The synthesis and catalytic activity of a series of tris-half sandwich cyclopentadienyl nickel (II) N-heterocyclic carbene (NHC) complexes, that have approximate C3 symmetry, is described. The molecules consist of [Ni(NHC)BrCp] groups (Cp = η-C5H5) in which the NHC ligand is grafted on to the lower rim of a 1,3,5 trimethoxy p-tert butylcalix [6] arene via methylene spacers. These species are all synthesized from 1,3,5-trimethoxy-2,4,6 tris-substituted imidazolium tribromide salts via reactions with nickelocene. All complexes were fully characterized by 1H and 13C NMR spectroscopy and by mass spectrometry. Their catalytic activity in the Suzuki-Miyaura cross coupling reaction was probed.
- Subjects :
- 010405 organic chemistry
Ligand
Nickelocene
010402 general chemistry
01 natural sciences
Coupling reaction
0104 chemical sciences
Catalysis
Inorganic Chemistry
chemistry.chemical_compound
chemistry
Cyclopentadienyl complex
Polymer chemistry
Materials Chemistry
Physical and Theoretical Chemistry
Methylene
Carbene
Tribromide
Subjects
Details
- ISSN :
- 00201693
- Volume :
- 505
- Database :
- OpenAIRE
- Journal :
- Inorganica Chimica Acta
- Accession number :
- edsair.doi...........9bc2a0fa664f0a3aa3a252e0b5888d5f