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

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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.; Chakrabarti, Kaushik; Isapour, Ghodsieh; Bendix, Jesper; Wendt, Ola F.

I: European Journal of Inorganic Chemistry, Vol. 2020, Nr. 45, 2020, s. 4270-4277.

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T1 - Enhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm

AU - Mousa, Abdelrazek H.

AU - Chakrabarti, Kaushik

AU - Isapour, Ghodsieh

AU - Bendix, Jesper

AU - Wendt, Ola F.

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - Cross-coupling

KW - Homogeneous catalysis

KW - Nickel

KW - Paramagnetic complexes

KW - Pincer ligands

U2 - 10.1002/ejic.202000727

DO - 10.1002/ejic.202000727

M3 - Article

AN - SCOPUS:85096702968

VL - 2020

SP - 4270

EP - 4277

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

SN - 1099-0682

IS - 45

ER -