Pressure modulates stereoregularities in the polymerization of propylene promoted by rac-octahedral heteroallylic complexes

Victoria Volkis; Michal Shmulinson; Claudia Averbuj; Anatoli Lisovskii; Frank T. Edelmann; Moris S. Eisen

doi:10.1021/om980335d

Pressure modulates stereoregularities in the polymerization of propylene promoted by rac-octahedral heteroallylic complexes

Victoria Volkis, Michal Shmulinson, Claudia Averbuj, Anatoli Lisovskii, Frank T. Edelmann, Moris S. Eisen^*

^*Corresponding author for this work

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

119 Scopus citations

Abstract

This communication reports the synthesis and activity of four racemic mixtures of bis(benzamidinate) group-4 complexes, cis-[p-R′C₆H₄C(NR)₂]₂MX ₂ (R′ = CH₃, R = SiMe₃, M = Ti, X = Cl (1); R′ = CH₃, R = SiMe₃, M = Zr X = Cl (2); R′ = H, R = i-pr, M = Zr, X = Cl (3); R′ = CH₃, R = SiMe₃, M = Zr, X = CH₃ (4)) as precatalysts for the stereoregular polymerization of propylene. These complexes catalyze the stereoregular polymerization of propylene only under pressure in CH₂Cl₂, producing polypropylene with very large isotacticities (mmmm % = ∼95-98), high melting points (140-154 °C).

Original language	English
Pages (from-to)	3155-3157
Number of pages	3
Journal	Organometallics
Volume	17
Issue number	15
DOIs	https://doi.org/10.1021/om980335d
State	Published - 20 Jul 1998
Externally published	Yes

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@article{61b12788b01e48139be40d820170130b,

title = "Pressure modulates stereoregularities in the polymerization of propylene promoted by rac-octahedral heteroallylic complexes",

abstract = "This communication reports the synthesis and activity of four racemic mixtures of bis(benzamidinate) group-4 complexes, cis-[p-R′C6H4C(NR)2]2MX 2 (R′ = CH3, R = SiMe3, M = Ti, X = Cl (1); R′ = CH3, R = SiMe3, M = Zr X = Cl (2); R′ = H, R = i-pr, M = Zr, X = Cl (3); R′ = CH3, R = SiMe3, M = Zr, X = CH3 (4)) as precatalysts for the stereoregular polymerization of propylene. These complexes catalyze the stereoregular polymerization of propylene only under pressure in CH2Cl2, producing polypropylene with very large isotacticities (mmmm % = ∼95-98), high melting points (140-154 °C).",

author = "Victoria Volkis and Michal Shmulinson and Claudia Averbuj and Anatoli Lisovskii and Edelmann, {Frank T.} and Eisen, {Moris S.}",

year = "1998",

month = jul,

day = "20",

doi = "10.1021/om980335d",

language = "英语",

volume = "17",

pages = "3155--3157",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "15",

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TY - JOUR

T1 - Pressure modulates stereoregularities in the polymerization of propylene promoted by rac-octahedral heteroallylic complexes

AU - Volkis, Victoria

AU - Shmulinson, Michal

AU - Averbuj, Claudia

AU - Lisovskii, Anatoli

AU - Edelmann, Frank T.

AU - Eisen, Moris S.

PY - 1998/7/20

Y1 - 1998/7/20

N2 - This communication reports the synthesis and activity of four racemic mixtures of bis(benzamidinate) group-4 complexes, cis-[p-R′C6H4C(NR)2]2MX 2 (R′ = CH3, R = SiMe3, M = Ti, X = Cl (1); R′ = CH3, R = SiMe3, M = Zr X = Cl (2); R′ = H, R = i-pr, M = Zr, X = Cl (3); R′ = CH3, R = SiMe3, M = Zr, X = CH3 (4)) as precatalysts for the stereoregular polymerization of propylene. These complexes catalyze the stereoregular polymerization of propylene only under pressure in CH2Cl2, producing polypropylene with very large isotacticities (mmmm % = ∼95-98), high melting points (140-154 °C).

AB - This communication reports the synthesis and activity of four racemic mixtures of bis(benzamidinate) group-4 complexes, cis-[p-R′C6H4C(NR)2]2MX 2 (R′ = CH3, R = SiMe3, M = Ti, X = Cl (1); R′ = CH3, R = SiMe3, M = Zr X = Cl (2); R′ = H, R = i-pr, M = Zr, X = Cl (3); R′ = CH3, R = SiMe3, M = Zr, X = CH3 (4)) as precatalysts for the stereoregular polymerization of propylene. These complexes catalyze the stereoregular polymerization of propylene only under pressure in CH2Cl2, producing polypropylene with very large isotacticities (mmmm % = ∼95-98), high melting points (140-154 °C).

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U2 - 10.1021/om980335d

DO - 10.1021/om980335d

M3 - 文章

AN - SCOPUS:0009890874

SN - 0276-7333

VL - 17

SP - 3155

EP - 3157

JO - Organometallics

JF - Organometallics

IS - 15

ER -

Pressure modulates stereoregularities in the polymerization of propylene promoted by rac-octahedral heteroallylic complexes

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