Synthesis and characterization of tridentate nickel complexes bearing P∧N∧N and P∧N∧P ligands and their catalytic property in ethylene oligomerization

Junxian Hou; Wen Hua Sun; Shu Zhang; Hongwei Ma; Yuan Deng; Xiaoming Lu

doi:10.1021/om0507979

Synthesis and characterization of tridentate nickel complexes bearing P∧N∧N and P∧N∧P ligands and their catalytic property in ethylene oligomerization

Junxian Hou, Wen Hua Sun^*, Shu Zhang, Hongwei Ma, Yuan Deng, Xiaoming Lu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

96 Citations (Scopus)

Abstract

A series of nickel(II) complexes ligated by the N-(1-(2-(diarylphosphino) phenyl)methylidene)quinolin-8-amines (P∧N∧N) and 2-(diphenylphosphino)- N-[2-(diarylphosphino)benzylidene]anilines (P∧N∧P) were synthesized and characterized by elemental analysis, spectroscopy, and X-ray crystallography. X-ray crystallographic analyses reveal complexes 16 and 20 as having a five-coordinated distorted trigonal-bipyramidal geometry, while complex 12 displays a distorted square-pyramidal geometry and complex 13 is distorted square planar. Upon activation with MAO and AlEtCl₂, these complexes exhibited considerably high activity (up to 1.34 × 10⁶ g·mol^-1(Ni)·h^-1) of ethylene oligomerization. It was found that ligand environment and reaction conditions significantly affect the activity of the catalysts. In addition, a cobalt analogue with a distorted tetrahedral coordination geometry was investigated, which showed low activity of ethylene oligomerization.

Original language	English
Pages (from-to)	236-244
Number of pages	9
Journal	Organometallics
Volume	25
Issue number	1
DOIs	https://doi.org/10.1021/om0507979
Publication status	Published - 2 Jan 2006
Externally published	Yes

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Hou, J., Sun, W. H., Zhang, S., Ma, H., Deng, Y., & Lu, X. (2006). Synthesis and characterization of tridentate nickel complexes bearing P∧N∧N and P∧N∧P ligands and their catalytic property in ethylene oligomerization. Organometallics, 25(1), 236-244. https://doi.org/10.1021/om0507979

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title = "Synthesis and characterization of tridentate nickel complexes bearing P∧N∧N and P∧N∧P ligands and their catalytic property in ethylene oligomerization",

abstract = "A series of nickel(II) complexes ligated by the N-(1-(2-(diarylphosphino) phenyl)methylidene)quinolin-8-amines (P∧N∧N) and 2-(diphenylphosphino)- N-[2-(diarylphosphino)benzylidene]anilines (P∧N∧P) were synthesized and characterized by elemental analysis, spectroscopy, and X-ray crystallography. X-ray crystallographic analyses reveal complexes 16 and 20 as having a five-coordinated distorted trigonal-bipyramidal geometry, while complex 12 displays a distorted square-pyramidal geometry and complex 13 is distorted square planar. Upon activation with MAO and AlEtCl2, these complexes exhibited considerably high activity (up to 1.34 × 106 g·mol-1(Ni)·h-1) of ethylene oligomerization. It was found that ligand environment and reaction conditions significantly affect the activity of the catalysts. In addition, a cobalt analogue with a distorted tetrahedral coordination geometry was investigated, which showed low activity of ethylene oligomerization.",

author = "Junxian Hou and Sun, {Wen Hua} and Shu Zhang and Hongwei Ma and Yuan Deng and Xiaoming Lu",

year = "2006",

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doi = "10.1021/om0507979",

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T1 - Synthesis and characterization of tridentate nickel complexes bearing P∧N∧N and P∧N∧P ligands and their catalytic property in ethylene oligomerization

AU - Hou, Junxian

AU - Sun, Wen Hua

AU - Zhang, Shu

AU - Ma, Hongwei

AU - Deng, Yuan

AU - Lu, Xiaoming

PY - 2006/1/2

Y1 - 2006/1/2

N2 - A series of nickel(II) complexes ligated by the N-(1-(2-(diarylphosphino) phenyl)methylidene)quinolin-8-amines (P∧N∧N) and 2-(diphenylphosphino)- N-[2-(diarylphosphino)benzylidene]anilines (P∧N∧P) were synthesized and characterized by elemental analysis, spectroscopy, and X-ray crystallography. X-ray crystallographic analyses reveal complexes 16 and 20 as having a five-coordinated distorted trigonal-bipyramidal geometry, while complex 12 displays a distorted square-pyramidal geometry and complex 13 is distorted square planar. Upon activation with MAO and AlEtCl2, these complexes exhibited considerably high activity (up to 1.34 × 106 g·mol-1(Ni)·h-1) of ethylene oligomerization. It was found that ligand environment and reaction conditions significantly affect the activity of the catalysts. In addition, a cobalt analogue with a distorted tetrahedral coordination geometry was investigated, which showed low activity of ethylene oligomerization.

AB - A series of nickel(II) complexes ligated by the N-(1-(2-(diarylphosphino) phenyl)methylidene)quinolin-8-amines (P∧N∧N) and 2-(diphenylphosphino)- N-[2-(diarylphosphino)benzylidene]anilines (P∧N∧P) were synthesized and characterized by elemental analysis, spectroscopy, and X-ray crystallography. X-ray crystallographic analyses reveal complexes 16 and 20 as having a five-coordinated distorted trigonal-bipyramidal geometry, while complex 12 displays a distorted square-pyramidal geometry and complex 13 is distorted square planar. Upon activation with MAO and AlEtCl2, these complexes exhibited considerably high activity (up to 1.34 × 106 g·mol-1(Ni)·h-1) of ethylene oligomerization. It was found that ligand environment and reaction conditions significantly affect the activity of the catalysts. In addition, a cobalt analogue with a distorted tetrahedral coordination geometry was investigated, which showed low activity of ethylene oligomerization.

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U2 - 10.1021/om0507979

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SN - 0276-7333

VL - 25

SP - 236

EP - 244

JO - Organometallics

JF - Organometallics

IS - 1

ER -

Synthesis and characterization of tridentate nickel complexes bearing P∧N∧N and P∧N∧P ligands and their catalytic property in ethylene oligomerization

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