KFU. Card publication. Unsymmetrical pyrazole-based PCN pincer NiII halides: Reactivity and catalytic activity in ethylene oligomerization

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FEDERAL UNIVERSITY

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UNSYMMETRICAL PYRAZOLE-BASED PCN PINCER NIII HALIDES: REACTIVITY AND CATALYTIC ACTIVITY IN ETHYLENE OLIGOMERIZATION

Form of presentation

Articles in international journals and collections

Year of publication

2020

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Authors, employees of KFU

Bekmukhamedov Giyaz Eduardovich, author

Gafurov Zufar Nafigullovich, author

Dzhambastiani Dzhuliano , author

Islamov Daut Rinatovich, author

Khayarov Khasan Rafaelevich, author

Yakhvarov Dmitriy Grigorevich, author

Other authors

Luconi Lapo , author

Rossin Andrea , author

Zaripov Ruslan Bulatovich, author

Sakhapov Ilyas Faridovich, author

Authors, students KFU

Kagilev Aleksey Aleksandrovich, author

Mikhaylov Ilya Konstantinovich, author

Usachev Konstantin Sergeevich, author

Bibliographic description in the original language

Gafurov Z.N., Bekmukhamedov G.E., Kagilev A.A., Kantyukov A.O., Sakhapov I.F., Mikhailov I.K., Khayarov K.R., Zaripov R.B., Islamov D.R., Usachev K.S., Luconi L., Rossin A., Giambastiani G., Yakhvarov D.G. Unsymmetrical pyrazole-based PCN pincer NiII halides: Reactivity and catalytic activity in ethylene oligomerization // Journal of Organometallic Chemistry. 2020. V. 912. P. 121163. https://doi.org/10.1016/j.jorganchem.2020.121163.

Annotation

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,h1) with the formation of evennumbered olefins (mainly C4eC10 fractions) as products.

Keywords

Unsymmetrical ligands; PCN pincer ligands; Nickel complexes; Nickel borohydrides; Ethylene oligomerization

The name of the journal

JOURNAL OF ORGANOMETALLIC CHEMISTRY

On-line resource for training course

http://dspace.kpfu.ru/xmlui/bitstream/handle/net/158217/Gafurov_J.Organomet.Chem_2020_121163__pervaya_stranica_.pdf?sequence=1&isAllowed=y

URL

https://doi.org/10.1016/j.jorganchem.2020.121163

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=226252&p_lang=2

Resource files

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Gafurov_J.Organomet.Chem_2020_121163__pervaya_stranica_.pdf	0,87	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bekmukhamedov Giyaz Eduardovich	ru_RU
dc.contributor.author	Gafurov Zufar Nafigullovich	ru_RU
dc.contributor.author	Dzhambastiani Dzhuliano	ru_RU
dc.contributor.author	Islamov Daut Rinatovich	ru_RU
dc.contributor.author	Khayarov Khasan Rafaelevich	ru_RU
dc.contributor.author	Yakhvarov Dmitriy Grigorevich	ru_RU
dc.contributor.author	Luconi Lapo	ru_RU
dc.contributor.author	Rossin Andrea	ru_RU
dc.contributor.author	Zaripov Ruslan Bulatovich	ru_RU
dc.contributor.author	Sakhapov Ilyas Faridovich	ru_RU
dc.contributor.author	Kagilev Aleksey Aleksandrovich	ru_RU
dc.contributor.author	Mikhaylov Ilya Konstantinovich	ru_RU
dc.contributor.author	Usachev Konstantin Sergeevich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Gafurov Z.N., Bekmukhamedov G.E., Kagilev A.A., Kantyukov A.O., Sakhapov I.F., Mikhailov I.K., Khayarov K.R., Zaripov R.B., Islamov D.R., Usachev K.S., Luconi L., Rossin A., Giambastiani G., Yakhvarov D.G. Unsymmetrical pyrazole-based PCN pincer NiII halides: Reactivity and catalytic activity in ethylene oligomerization // Journal of Organometallic Chemistry. 2020. V. 912. P. 121163. https://doi.org/10.1016/j.jorganchem.2020.121163.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=226252&p_lang=2	ru_RU
dc.description.abstract	JOURNAL OF ORGANOMETALLIC CHEMISTRY	ru_RU
dc.description.abstract	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,h1) with the formation of evennumbered olefins (mainly C4eC10 fractions) as products.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Unsymmetrical pyrazole-based PCN pincer NiII halides: Reactivity and catalytic activity in ethylene oligomerization	ru_RU
dc.type	Articles in international journals and collections	ru_RU