Synthesis, characterization and catalytic behavior toward ethylene of cobalt(II) and iron(II) complexes bearing 2-(1-aryliminoethylidene)quinolines
摘要:
A series of 2-(1-aryliminoethylidene)quinolines (L) were synthesized and used as bidentate N boolean AND N ligands in coordinating with metal (cobalt and iron) chlorides to form complexes of the type LMCl(2), cobalt(II) (Co1-Co5) and iron(II) (Fe1-Fe5). All organic compounds and metal complexes were fully characterized, and the molecular structures of the representative complexes Co3 center dot DMF and Fe4 center dot DMF were confirmed as distorted bipyramidal geometry at the metal by single-crystal X-ray diffraction. Upon activation with either methylaluminoxane (MAO) or modified methylaluminoxane (MMAO) under 10 atm ethylene, all complexes showed high activities in ethylene dimerization with activities of up to 1.82 x 10(6) g mol(-1) (Co) h(-1) and 5.89 x 10(5) g mol(-1) (Fe) h(-1), respectively. (C) 2011 Elsevier B. V. All rights reserved.
Synthesis, characterization and catalytic behavior toward ethylene of cobalt(II) and iron(II) complexes bearing 2-(1-aryliminoethylidene)quinolines
摘要:
A series of 2-(1-aryliminoethylidene)quinolines (L) were synthesized and used as bidentate N boolean AND N ligands in coordinating with metal (cobalt and iron) chlorides to form complexes of the type LMCl(2), cobalt(II) (Co1-Co5) and iron(II) (Fe1-Fe5). All organic compounds and metal complexes were fully characterized, and the molecular structures of the representative complexes Co3 center dot DMF and Fe4 center dot DMF were confirmed as distorted bipyramidal geometry at the metal by single-crystal X-ray diffraction. Upon activation with either methylaluminoxane (MAO) or modified methylaluminoxane (MMAO) under 10 atm ethylene, all complexes showed high activities in ethylene dimerization with activities of up to 1.82 x 10(6) g mol(-1) (Co) h(-1) and 5.89 x 10(5) g mol(-1) (Fe) h(-1), respectively. (C) 2011 Elsevier B. V. All rights reserved.
2-(1-Arylimino)quinolylnickel halides: Synthesis, characterization and catalytic behavior towards ethylene
作者:Shengju Song、Tianpengfei Xiao、Lin Wang、Carl Redshaw、Fosong Wang、Wen-Hua Sun
DOI:10.1016/j.jorganchem.2011.11.001
日期:2012.2
A series of 2-(1-arylimino) quinolylnickel halides were synthesized and characterized by IR and elemental analyses. Distorted trigonal bipyramidal geometries are adopted for the nickel complexes C1, C4, C7 and C11 as crystallized from either DMF or methanol solution. When activated by Et2AlCl, the nickel precatalysts exhibited good to high catalytic activities in ethylene oligomerization. (C) 2011 Elsevier B.V. All rights reserved.
Synthesis, characterization and catalytic behavior toward ethylene of cobalt(II) and iron(II) complexes bearing 2-(1-aryliminoethylidene)quinolines
作者:Shengju Song、Weizhen Zhao、Lin Wang、Carl Redshaw、Fosong Wang、Wen-Hua Sun
DOI:10.1016/j.jorganchem.2011.06.003
日期:2011.9
A series of 2-(1-aryliminoethylidene)quinolines (L) were synthesized and used as bidentate N boolean AND N ligands in coordinating with metal (cobalt and iron) chlorides to form complexes of the type LMCl(2), cobalt(II) (Co1-Co5) and iron(II) (Fe1-Fe5). All organic compounds and metal complexes were fully characterized, and the molecular structures of the representative complexes Co3 center dot DMF and Fe4 center dot DMF were confirmed as distorted bipyramidal geometry at the metal by single-crystal X-ray diffraction. Upon activation with either methylaluminoxane (MAO) or modified methylaluminoxane (MMAO) under 10 atm ethylene, all complexes showed high activities in ethylene dimerization with activities of up to 1.82 x 10(6) g mol(-1) (Co) h(-1) and 5.89 x 10(5) g mol(-1) (Fe) h(-1), respectively. (C) 2011 Elsevier B. V. All rights reserved.