KFU. Card publication. Catalytic performance of nickel(II) complexes bearing 1,10-phenanthroline based ligands in homogeneous ethylene oligomerization

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CATALYTIC PERFORMANCE OF NICKEL(II) COMPLEXES BEARING 1,10-PHENANTHROLINE BASED LIGANDS IN HOMOGENEOUS ETHYLENE OLIGOMERIZATION

Form of presentation

Articles in international journals and collections

Year of publication

2022

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Authors, employees of KFU

Bekmukhamedov Giyaz Eduardovich, author

Sukhov Aleksandr Vyacheslavovich, author

Khayarov Khasan Rafaelevich, author

Yakhvarov Dmitriy Grigorevich, author

Other authors

Babaev Vasiliy Mikhaylovich, author

Dobrynin Aleksey Borisovich, author

Authors, postgraduates KFU

Kuchkaev Aydar Maratovich, postgraduate kfu

Kuchkaev Ayrat Maratovich, postgraduate kfu

Bibliographic description in the original language

Catalytic performance of nickel(II) complexes bearing 1,10-phenanthroline based ligands in homogeneous ethylene oligomerization // G.E. Bekmukhamedov, A.V. Sukhov, A.M. Kuchkaev, A.M. Kuchkaev, K.R. Khayarov, A.B. Dobrynin, V.M. Babaev, D.G. Yakhvarov // Polyhedron. – 2022. – 223. – 115978. https://doi.org/10.1016/j.poly.2022.115978

Annotation

A comparative study of catalytic activity of nickel(II) complexes bearing 1,10-phenanthroline (phen) based ligands in homogeneous ethylene oligomerization process has been performed. It was found that activated by methylaluminoxane (MMAO-12), [NiBr2(phen)] complex oligomerizes ethylene with the moderate activity (66.2×103 molC2H4∙molNi-1∙h-1) to the wide range (C4–C20) of even-numbered olefins, with a selectivity for linear alpha-olefins of 43%. The insertion of the carbonyl groups at the 5- and 6-position of 1,10-phenanthroline leads to an increase in catalytic activity up to 81.4×103 molC2H4∙molNi-1∙h-1. The presence of hydroxyl groups at the same positions causes a decrease in activity to 15.5×103 molC2H4∙molNi-1∙h-1. The steric hindrances near the metal center caused by the methyl groups at 2- and 9-position of 2,9-dimethyl-1,10-phenanthroline result in a decrease in the activity to (26.8–52.2)×103 molC2H4∙molNi-1∙h-1 and increasing of the selectivity to butenes to 80–96%. The use of activated by MMAO-12 organonickel sigma-complex [NiBr(Mes)(phen)] (where Mes = 2,4,6-trimethylphenyl) bearing Ni–C bond increases the oligomerization activity – the activated complex dimerizes ethylene to mainly butenes with activity of 83.5×103 molC2H4∙molNi-1∙h-1. At the same time, this sigma-complex in combination with Et3Al2Cl3 and EtAlCl2 served as activators exhibits higher oligomerization activity – (348.1–394.5)×103 molC2H4∙molNi-1∙h-1, and lower selectivity to butenes – 58–61%.

Keywords

1,10-phenanthroline, nickel(II) complex, homogeneous catalysis, ethylene oligomerization, butene

The name of the journal

POLYHEDRON

URL

https://doi.org/10.1016/j.poly.2022.115978

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

https://repository.kpfu.ru/eng/?p_id=267710&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bekmukhamedov Giyaz Eduardovich	ru_RU
dc.contributor.author	Sukhov Aleksandr Vyacheslavovich	ru_RU
dc.contributor.author	Khayarov Khasan Rafaelevich	ru_RU
dc.contributor.author	Yakhvarov Dmitriy Grigorevich	ru_RU
dc.contributor.author	Babaev Vasiliy Mikhaylovich	ru_RU
dc.contributor.author	Dobrynin Aleksey Borisovich	ru_RU
dc.contributor.author	Kuchkaev Aydar Maratovich	ru_RU
dc.contributor.author	Kuchkaev Ayrat Maratovich	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Catalytic performance of nickel(II) complexes bearing 1,10-phenanthroline based ligands in homogeneous ethylene oligomerization // G.E. Bekmukhamedov, A.V. Sukhov, A.M. Kuchkaev, A.M. Kuchkaev, K.R. Khayarov, A.B. Dobrynin, V.M. Babaev, D.G. Yakhvarov // Polyhedron. – 2022. – 223. – 115978. https://doi.org/10.1016/j.poly.2022.115978	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=267710&p_lang=2	ru_RU
dc.description.abstract	POLYHEDRON	ru_RU
dc.description.abstract	A comparative study of catalytic activity of nickel(II) complexes bearing 1,10-phenanthroline (phen) based ligands in homogeneous ethylene oligomerization process has been performed. It was found that activated by methylaluminoxane (MMAO-12), [NiBr2(phen)] complex oligomerizes ethylene with the moderate activity (66.2×103 molC2H4∙molNi-1∙h-1) to the wide range (C4–C20) of even-numbered olefins, with a selectivity for linear alpha-olefins of 43%. The insertion of the carbonyl groups at the 5- and 6-position of 1,10-phenanthroline leads to an increase in catalytic activity up to 81.4×103 molC2H4∙molNi-1∙h-1. The presence of hydroxyl groups at the same positions causes a decrease in activity to 15.5×103 molC2H4∙molNi-1∙h-1. The steric hindrances near the metal center caused by the methyl groups at 2- and 9-position of 2,9-dimethyl-1,10-phenanthroline result in a decrease in the activity to (26.8–52.2)×103 molC2H4∙molNi-1∙h-1 and increasing of the selectivity to butenes to 80–96%. The use of activated by MMAO-12 organonickel sigma-complex [NiBr(Mes)(phen)] (where Mes = 2,4,6-trimethylphenyl) bearing Ni–C bond increases the oligomerization activity – the activated complex dimerizes ethylene to mainly butenes with activity of 83.5×103 molC2H4∙molNi-1∙h-1. At the same time, this sigma-complex in combination with Et3Al2Cl3 and EtAlCl2 served as activators exhibits higher oligomerization activity – (348.1–394.5)×103 molC2H4∙molNi-1∙h-1, and lower selectivity to butenes – 58–61%.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	1	ru_RU
dc.subject	10-phenanthroline	ru_RU
dc.subject	nickel(II) complex	ru_RU
dc.subject	homogeneous catalysis	ru_RU
dc.subject	ethylene oligomerization	ru_RU
dc.subject	butene	ru_RU
dc.title	Catalytic performance of nickel(II) complexes bearing 1,10-phenanthroline based ligands in homogeneous ethylene oligomerization	ru_RU
dc.type	Articles in international journals and collections	ru_RU