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Unsymmetrical pyrazole-based PCN pincer Ni<sup>II</sup> halides: Reactivity and catalytic activity in ethylene oligomerization

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dc.contributor.author Gafurov Z.N.
dc.contributor.author Bekmukhamedov G.E.
dc.contributor.author Kagilev A.A.
dc.contributor.author Kantyukov A.O.
dc.contributor.author Sakhapov I.F.
dc.contributor.author Mikhailov I.K.
dc.contributor.author Khayarov K.R.
dc.contributor.author Zaripov R.B.
dc.contributor.author Islamov D.R.
dc.contributor.author Usachev K.S.
dc.contributor.author Luconi L.
dc.contributor.author Rossin A.
dc.contributor.author Giambastiani G.
dc.contributor.author Yakhvarov D.G.
dc.date.accessioned 2021-02-24T20:33:01Z
dc.date.available 2021-02-24T20:33:01Z
dc.date.issued 2020
dc.identifier.issn 0022-328X
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/160832
dc.description.abstract © 2020 Elsevier B.V. The reactivity of unsymmetrical pyrazole-based PCN pincer Ni(II) halides has been tested in the presence of copper(II) halides as an oxidizing agent as well as with NaBH4 and LiAlH4 as a hydride source. While the reaction with CuX2 resulted into the generation of metastable PCN pincer Ni(III) species, the treatment of (tBuPCN)NiCl with NaBH4 led to the preparation and isolation of the borohydride complex (tBuPCN)Ni(BH4). Attempts to isolate nickel-hydride species upon treatment of (tBuPCN)NiCl with either NaBH4 or LiAlH4 invariably led to the formation of free PCN(H) ligand and metallic Ni(0) nanoparticles after an in situ reductive elimination from the (metastable) hydride derivative (tBuPCN)NiH. Finally, the halide complexes (pre-activated by MMAO) have been tested as homogeneous catalysts in ethylene oligomerization showing moderate activity (∼ 14 × 103 molC2H4⋅molNi−1⋅h−1) with the formation of even-numbered olefins (mainly C4–C10 fractions) as products.
dc.relation.ispartofseries Journal of Organometallic Chemistry
dc.subject Ethylene oligomerization
dc.subject Nickel borohydrides
dc.subject Nickel complexes
dc.subject PCN pincer ligands
dc.subject Unsymmetrical ligands
dc.title Unsymmetrical pyrazole-based PCN pincer Ni<sup>II</sup> halides: Reactivity and catalytic activity in ethylene oligomerization
dc.type Article
dc.relation.ispartofseries-volume 912
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS0022328X-2020-912-SID85080047512

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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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