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Enhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm

Mousa, Abdelrazek H. LU ; Chakrabarti, Kaushik LU ; Isapour, Ghodsieh ; Bendix, Jesper and Wendt, Ola F. LU (2020) In European Journal of Inorganic Chemistry 2020(45). p.4270-4277
Abstract

New PCNPy pincer nickel complexes have been synthesized through a short synthetic route. Incorporating pyridine as the nitrogen side arm facilitated the C–H activation in the PCN ligand and allowed the cyclometallation with nickel to take place at room temperature. Pyridine also enhanced the stability of β-hydrogen-containing alkyl complexes. Also, the symmetric NCN nickel complex with pyridine side arms was successfully obtained giving a rare example of such type of complexes to be prepared through direct C–H activation. Furthermore, preliminary results showed that the (PCNPy)Ni–Br is active in Kumada coupling reactions particularly the coupling of aryl halides with aryl Grignard reagents.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cross-coupling, Homogeneous catalysis, Nickel, Paramagnetic complexes, Pincer ligands
in
European Journal of Inorganic Chemistry
volume
2020
issue
45
pages
4270 - 4277
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85096702968
ISSN
1434-1948
DOI
10.1002/ejic.202000727
language
English
LU publication?
yes
id
6fde9370-3861-4308-977c-b1d807acde8f
date added to LUP
2020-12-08 10:52:32
date last changed
2022-04-19 02:35:13
@article{6fde9370-3861-4308-977c-b1d807acde8f,
  abstract     = {{<p>New PCN<sup>Py</sup> pincer nickel complexes have been synthesized through a short synthetic route. Incorporating pyridine as the nitrogen side arm facilitated the C–H activation in the PCN ligand and allowed the cyclometallation with nickel to take place at room temperature. Pyridine also enhanced the stability of β-hydrogen-containing alkyl complexes. Also, the symmetric NCN nickel complex with pyridine side arms was successfully obtained giving a rare example of such type of complexes to be prepared through direct C–H activation. Furthermore, preliminary results showed that the (PCN<sup>Py</sup>)Ni–Br is active in Kumada coupling reactions particularly the coupling of aryl halides with aryl Grignard reagents.</p>}},
  author       = {{Mousa, Abdelrazek H. and Chakrabarti, Kaushik and Isapour, Ghodsieh and Bendix, Jesper and Wendt, Ola F.}},
  issn         = {{1434-1948}},
  keywords     = {{Cross-coupling; Homogeneous catalysis; Nickel; Paramagnetic complexes; Pincer ligands}},
  language     = {{eng}},
  number       = {{45}},
  pages        = {{4270--4277}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{European Journal of Inorganic Chemistry}},
  title        = {{Enhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm}},
  url          = {{http://dx.doi.org/10.1002/ejic.202000727}},
  doi          = {{10.1002/ejic.202000727}},
  volume       = {{2020}},
  year         = {{2020}},
}