Synthesis, structure and catalytic activity of phosphine-substituted zirconium salicylaldiminato complexes

Musa Said; David L. Hughes; Manfred Bochmann

doi:10.1016/j.ica.2005.10.041

Synthesis, structure and catalytic activity of phosphine-substituted zirconium salicylaldiminato complexes

Musa Said, David L. Hughes, Manfred Bochmann

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Abstract

The reaction of the lithium iminophenolate LiOC₆H₃-2-Bu^t-6-CH==as m-dash" border="0">NAr, where Ar = 3-C₆H₄P{C₆H₃(CF₃)₂-3,5}₂, [Li(O–N^P)] with ZrCl₄ affords ZrCl₂(O–N^P)₂. Whereas previously reported zirconium bis(salicylaldiminato) complexes are typified by the trans orientation of the O-atoms, the molecular structure ZrCl₂(O–N^P)₂ is unusual in adopting an all-cis arrangement of N, O and Cl donors. The crystal structure of the parent ligand, HOC₆H₃-2-Bu^t-6-CH==as m-dash" border="0">NC₆H₄PPh₂-3, is reported for comparison. Upon activation with methylaluminoxane the complex is highly active for the polymerisation of ethylene to oligomers and low-molecular weight polymers. Notably, the catalytic activity is unaffected by the presence of phosphine donors.

Original language	English
Pages (from-to)	3467-3473
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	359
Issue number	11
DOIs	https://doi.org/10.1016/j.ica.2005.10.041
Publication status	Published - 1 Aug 2006

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10.1016/j.ica.2005.10.041

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@article{dadcc06c18324ba1bb68c3bafe38ff80,

title = "Synthesis, structure and catalytic activity of phosphine-substituted zirconium salicylaldiminato complexes",

abstract = "The reaction of the lithium iminophenolate LiOC6H3-2-But-6-CH==as m-dash{"} border={"}0{"}>NAr, where Ar = 3-C6H4P{C6H3(CF3)2-3,5}2, [Li(O–NP)] with ZrCl4 affords ZrCl2(O–NP)2. Whereas previously reported zirconium bis(salicylaldiminato) complexes are typified by the trans orientation of the O-atoms, the molecular structure ZrCl2(O–NP)2 is unusual in adopting an all-cis arrangement of N, O and Cl donors. The crystal structure of the parent ligand, HOC6H3-2-But-6-CH==as m-dash{"} border={"}0{"}>NC6H4PPh2-3, is reported for comparison. Upon activation with methylaluminoxane the complex is highly active for the polymerisation of ethylene to oligomers and low-molecular weight polymers. Notably, the catalytic activity is unaffected by the presence of phosphine donors.",

author = "Musa Said and Hughes, {David L.} and Manfred Bochmann",

year = "2006",

month = aug,

day = "1",

doi = "10.1016/j.ica.2005.10.041",

language = "English",

volume = "359",

pages = "3467--3473",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier",

number = "11",

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TY - JOUR

T1 - Synthesis, structure and catalytic activity of phosphine-substituted zirconium salicylaldiminato complexes

AU - Said, Musa

AU - Hughes, David L.

AU - Bochmann, Manfred

PY - 2006/8/1

Y1 - 2006/8/1

N2 - The reaction of the lithium iminophenolate LiOC6H3-2-But-6-CH==as m-dash" border="0">NAr, where Ar = 3-C6H4P{C6H3(CF3)2-3,5}2, [Li(O–NP)] with ZrCl4 affords ZrCl2(O–NP)2. Whereas previously reported zirconium bis(salicylaldiminato) complexes are typified by the trans orientation of the O-atoms, the molecular structure ZrCl2(O–NP)2 is unusual in adopting an all-cis arrangement of N, O and Cl donors. The crystal structure of the parent ligand, HOC6H3-2-But-6-CH==as m-dash" border="0">NC6H4PPh2-3, is reported for comparison. Upon activation with methylaluminoxane the complex is highly active for the polymerisation of ethylene to oligomers and low-molecular weight polymers. Notably, the catalytic activity is unaffected by the presence of phosphine donors.

AB - The reaction of the lithium iminophenolate LiOC6H3-2-But-6-CH==as m-dash" border="0">NAr, where Ar = 3-C6H4P{C6H3(CF3)2-3,5}2, [Li(O–NP)] with ZrCl4 affords ZrCl2(O–NP)2. Whereas previously reported zirconium bis(salicylaldiminato) complexes are typified by the trans orientation of the O-atoms, the molecular structure ZrCl2(O–NP)2 is unusual in adopting an all-cis arrangement of N, O and Cl donors. The crystal structure of the parent ligand, HOC6H3-2-But-6-CH==as m-dash" border="0">NC6H4PPh2-3, is reported for comparison. Upon activation with methylaluminoxane the complex is highly active for the polymerisation of ethylene to oligomers and low-molecular weight polymers. Notably, the catalytic activity is unaffected by the presence of phosphine donors.

U2 - 10.1016/j.ica.2005.10.041

DO - 10.1016/j.ica.2005.10.041

M3 - Article

VL - 359

SP - 3467

EP - 3473

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

IS - 11

ER -