Synthesis of titanium(IV) complexes that contain the Bis(silylamide) ligand of the type [1,8-C10H6(NR)2]2-, and alkene polymerization catalyzed by [1,8-C10H6(NR)2]TiCl2-cocatalyst system

Kotohiro Nomura; Naofumi Naga; Kazuo Takaoki; Akio Imai

doi:10.1016/S1381-1169(97)00292-6

Synthesis of titanium(IV) complexes that contain the Bis(silylamide) ligand of the type [1,8-C₁₀H₆(NR)₂]^2-, and alkene polymerization catalyzed by [1,8-C₁₀H₆(NR)₂]TiCl₂-cocatalyst system

Kotohiro Nomura, Naofumi Naga, Kazuo Takaoki, Akio Imai

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

29 Citations (Scopus)

Abstract

[1,8-C₁₀H₆(NR)₂]TiCl₂ (3; R = SiMe₃, Si(i)BuMe₂, Si(i)Pr₃) complexes have been prepared from dilithio salts [1,8-C₁₀H₆(NR)₂]Li₂ (2) and TiCl₄ in diethyl ether in moderate yields (60-63%). These complexes showed significant catalytic activities for ethylene polymerization and for ethylene/1-hexene copolymerization in the presence of methylaluminoxane (MAO), methyl isobutyl aluminoxane (MMAO), Al(i)Bu₃- or AlEt₃-Ph₃CB(C₆F₅)₄ as a cocatalyst. The catalytic activities performed in heptane (cocatalyst MMAO) were higher than those carried out in toluene (cocatalyst MAO): 709 kg-PE/mol-Ti · h could be attained for ethylene polymerization by using [1,8-C₁₀H₆(NSi(i)BuMe₂)₂]TiCl₂-MMAO catalyst system.

Original language	English
Pages (from-to)	L209-L213
Journal	Journal of Molecular Catalysis A: Chemical
Volume	130
Issue number	3
DOIs	https://doi.org/10.1016/S1381-1169(97)00292-6
Publication status	Published - 1998 Apr 3
Externally published	Yes

Keywords

Alkene polymerization
Bis(silylamide) ligand
Metal complexes

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

Access to Document

10.1016/S1381-1169(97)00292-6

Cite this

Synthesis of titanium(IV) complexes that contain the Bis(silylamide) ligand of the type [1,8-C₁₀H₆(NR)₂]^2-, and alkene polymerization catalyzed by [1,8-C₁₀H₆(NR)₂]TiCl₂-cocatalyst system. / Nomura, Kotohiro; Naga, Naofumi; Takaoki, Kazuo et al.

In: Journal of Molecular Catalysis A: Chemical, Vol. 130, No. 3, 03.04.1998, p. L209-L213.

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

@article{0f4336d0b5d34b93909d2411a7ce8e60,

title = "Synthesis of titanium(IV) complexes that contain the Bis(silylamide) ligand of the type [1,8-C10H6(NR)2]2-, and alkene polymerization catalyzed by [1,8-C10H6(NR)2]TiCl2-cocatalyst system",

abstract = "[1,8-C10H6(NR)2]TiCl2 (3; R = SiMe3, Si(i)BuMe2, Si(i)Pr3) complexes have been prepared from dilithio salts [1,8-C10H6(NR)2]Li2 (2) and TiCl4 in diethyl ether in moderate yields (60-63%). These complexes showed significant catalytic activities for ethylene polymerization and for ethylene/1-hexene copolymerization in the presence of methylaluminoxane (MAO), methyl isobutyl aluminoxane (MMAO), Al(i)Bu3- or AlEt3-Ph3CB(C6F5)4 as a cocatalyst. The catalytic activities performed in heptane (cocatalyst MMAO) were higher than those carried out in toluene (cocatalyst MAO): 709 kg-PE/mol-Ti · h could be attained for ethylene polymerization by using [1,8-C10H6(NSi(i)BuMe2)2]TiCl2-MMAO catalyst system.",

keywords = "Alkene polymerization, Bis(silylamide) ligand, Metal complexes",

author = "Kotohiro Nomura and Naofumi Naga and Kazuo Takaoki and Akio Imai",

year = "1998",

month = apr,

day = "3",

doi = "10.1016/S1381-1169(97)00292-6",

language = "English",

volume = "130",

pages = "L209--L213",

journal = "Journal of Molecular Catalysis A: Chemical",

issn = "1381-1169",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Synthesis of titanium(IV) complexes that contain the Bis(silylamide) ligand of the type [1,8-C10H6(NR)2]2-, and alkene polymerization catalyzed by [1,8-C10H6(NR)2]TiCl2-cocatalyst system

AU - Nomura, Kotohiro

AU - Naga, Naofumi

AU - Takaoki, Kazuo

AU - Imai, Akio

PY - 1998/4/3

Y1 - 1998/4/3

N2 - [1,8-C10H6(NR)2]TiCl2 (3; R = SiMe3, Si(i)BuMe2, Si(i)Pr3) complexes have been prepared from dilithio salts [1,8-C10H6(NR)2]Li2 (2) and TiCl4 in diethyl ether in moderate yields (60-63%). These complexes showed significant catalytic activities for ethylene polymerization and for ethylene/1-hexene copolymerization in the presence of methylaluminoxane (MAO), methyl isobutyl aluminoxane (MMAO), Al(i)Bu3- or AlEt3-Ph3CB(C6F5)4 as a cocatalyst. The catalytic activities performed in heptane (cocatalyst MMAO) were higher than those carried out in toluene (cocatalyst MAO): 709 kg-PE/mol-Ti · h could be attained for ethylene polymerization by using [1,8-C10H6(NSi(i)BuMe2)2]TiCl2-MMAO catalyst system.

AB - [1,8-C10H6(NR)2]TiCl2 (3; R = SiMe3, Si(i)BuMe2, Si(i)Pr3) complexes have been prepared from dilithio salts [1,8-C10H6(NR)2]Li2 (2) and TiCl4 in diethyl ether in moderate yields (60-63%). These complexes showed significant catalytic activities for ethylene polymerization and for ethylene/1-hexene copolymerization in the presence of methylaluminoxane (MAO), methyl isobutyl aluminoxane (MMAO), Al(i)Bu3- or AlEt3-Ph3CB(C6F5)4 as a cocatalyst. The catalytic activities performed in heptane (cocatalyst MMAO) were higher than those carried out in toluene (cocatalyst MAO): 709 kg-PE/mol-Ti · h could be attained for ethylene polymerization by using [1,8-C10H6(NSi(i)BuMe2)2]TiCl2-MMAO catalyst system.

KW - Alkene polymerization

KW - Bis(silylamide) ligand

KW - Metal complexes

UR - http://www.scopus.com/inward/record.url?scp=0032478712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032478712&partnerID=8YFLogxK

U2 - 10.1016/S1381-1169(97)00292-6

DO - 10.1016/S1381-1169(97)00292-6

M3 - Article

AN - SCOPUS:0032478712

SN - 1381-1169

VL - 130

SP - L209-L213

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

IS - 3

ER -