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Stereospecific Olefin Polymerization With Chiral Metallocene Catalysts

H. Brintzinger, D. Fischer, R. Muelhaupt, B. Rieger, R. Waymouth
Published 1995 · Chemistry

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Current studies on novel, metallocenebased catalysts for the polymerization of α-olefins have far-reaching implications for the development of new materials as well as for the understanding of basic reaction mechanisms responsible for the growth of a polymer chain at a catalyst center and the control of its stereoregularity. In contrast to heterogeneous Ziegler–Natta catalysts, polymerization by a homogeneous, metallocene-based catalyst occurs principally at a single type of metal center with a defined coordination environment. This makes it possible to correlate metallocene structures with polymer properties such as molecular weight, stereochemical microstructure, crystallization behavior, and mechanical properties. Homogeneous catalyst systems now afford efficient control of regio- and stereoregularities, molecular weights and molecular weight distributions, and comonomer incorporation. By providing a means for the homo- and copolymerization of cyclic olefins, the cyclopolymerization of dienes, and access even to functionalized polyolefins, these catalysts greatly expand the range and versatility of technically feasible types of polyolefin materials. For corrigendum see DOI:10.1002/anie.199513681
This paper references
J. Chem. Soc. Dalton Trans. Am. Chem, Soc. J. Chem. Phrs. J. Am. Chem. Soc. Y. Kikuzono, J. Organome!. Chem. J. Am. Chem, Soc
D R Armstrong (1729)
Bercaw, 1. Am. Chern. Soc. 1992, 114. 7606; b) B. 1
E B W D Coughlin Burger
N. R. Newburg, J. Am. Chem. Soc
j D S Breslow (1955)
Penlidis in Comprehensive Pollmer Science, Vi,I
J F A Macgregor (1989)
Makromol. Chem. Maaomol. Symp
R T Miilhaupt (1991)
Makromol. Chelll
K H K R Reichert (1973)
Makromol. Chem. Makromol. Chem
K H Reichert (177)
J. Mol. Coral
J J W Y Y Bhuis (1990)
Chem. Itll. Ed. Engl. Chern. Soc. Chem. AngelL Chem. Int. Ed. Engl. OrganomeJ. Chem
G R Erker (1989)
Science Organometallics
G W Coates (1319)
4140, and b) on styrene polymerization by CpTi complexes
D R Wilson (1986)
Exchange of a CH, ligand between the coordination sites of a zirconocene methyl cation: NMR spectroscopic studies [50 a, d, e]; calculations by EHMO [84b] and ab initio methods
225: e) 1
Cheng, in ref. [6b], p. 281; d) 1. A
A Ewen (1987)
2722: b) F
Y j A ) T Usami (1986)
Jejelowo in ref
T B L Tait
M Galimberti (1993)
Piotrowski in ref. [6 b]. p. 371: 1. 1
J J A Eisch (1117)
Makromoi. Chun. Rapid Commun
T K Shiono (169)
T Tsutsui (1991)
which resemble the hemiisotactic structures discussed above in being sensitive to monomer concentrations, have also been obtained with other ansa-metallocene catalysts lacking C, or C, symmetry
Am. Chern. Soc
M Leclerc (1995)
J. Am. Chem. Soc
j L Clawson (1985)
Macromolecules Gaoo. Chim. Ital
A P Zambelli (1986)
Pohm, Sci. Part A
B W S Kolthammer (1017)
Grubbs in Proceedings 3. Symposium on Organic Syntheses via Organometallics
B M Novak (1988)
Surf Sci. Calal
j I A Ewen (271)
Makromol. Chern. Rapid Commlln
M K Kaminaka (1991)
Angennund. A. Hanuschik. M. Nolte in ref. [6g]. p. 251: c) U. Howeler. R. Mohr. M. Knickmeier. G. Erker
T N C R Doman (1352)
Chem. SOl'. 1991, f 13,3623; ibid. 1994.116,10015: b) related permethyl zirconocene hydride complexes
X C L Yang (1375)
Mol. Calal. N. Kashiwa, Slud. Surt: Sci. Calai
A Toyota (1989)
Meet. Am. Chern. Soc. Abstr. No. Chern. Inl. Ed. Engl
M Antberg L L Bohm (1511)
S W M Collins (1992)
Soc (1991)
J. Am. Chem, Soc
P G Gassman (1987)
Chern. Soc
j G Natta (1958)
Natta. P. Ganis, P. A. Temussi, 1. Polym. Sci
G Natta (1964)
Makromol. Chem. Rapid Commun. Makmmol. Chem. J Organomel. Chem
P Oliva (1990)
J. Am. Chem. Soc
M R G Kesti (1992)
Proc. Annu. Tech. COtlt: Rein!: PiIlSI. Compos. Inst. So
G P Ciuidetti (1927)
Macromolecules Organometallics
B J C Rieger (1989)
Chem. Soc
j A Ewen (1984)
Ange\1'. Chern. 1976. lili, 689: Allge,r
A H G Andresen (1976)
102J Fixation of ligand geometries by an ethanediyl bridge had been found to be beneficial for other types of stereoselective homogeneous catalysts, see e
Am. Chem, Soc. 1993. 115.4971; C. 1
M R Mason (1994)
J. Organomel. Chem
G S Henrici-Olive (1969)
Catalytic activities of titanocene and zirconocene complexes for the polymerization of propene. comparable to those attainable with MAO, have also been induced by mixtures of AIMe, and AIMe
Macromol. Rapid Commun
A C Marigo (225)
J. Am. Chem. Soc
j A ) L A Castonguay (1992)
Polym. Sci. Part C: Polym. Lett
Y Chatani (393)
Chfln. Soc. Chem. Comman. Organometallics
M L M Bochmann (1610)
L S Rcsconi (1990)
Polymer 1992 . 33 . 3878 : c ) A . A . Montagna . 1 . C . Floyd
B. van der Heijden Defoor. G. Groeninckx. P. Schouterden (1986)
J. Am. Chem. Soc. Organometallics
E B Bunel (1147)
Vaz in ref
T M Burkhardt
J. Am. Chem. Soc
C W Chien (1959)
C P De Rosa (1993)
Chem. Lett
j T Mise (1525)
AngeH ' . Chem . 1990 , 102 , 1459 ; Ange > l ' . Chern
P. K. Bradley R. F. Jordan (1984)
Makromol. Chem. Rapid Commun. Kashiwa. M. Kioka. Polym. Mat. Sci. Eng
T N Tsutsui (1990)
Tetrahedron Lett
Previously Prepared Chiral Titanocene And Zirconoc (1973)
High Resolution NMR of'Macromolecules Chain Structure and Con/ormation oj Macromolecules
F A A Bovey (1972)
Organometaliics 1993.12.633; b) M
M S J Bochmann (1220)
Waymouth in ref
G W R M Coates (1993)
Makromol. Chem
j V L Busico (1983)
2728: H. W. Turner. Eur
G G H W Hlatky (110)
Po(vm. Sci. 1986. 73/74
j Y Doi (1986)
J. Holton. 1. McMeeking. R. Pearce. 1. Chem. Soc. Chern. Commun
D G H A Ballard (994)
K Ziegler (1955)
Am. Chem. Soc. Macromolecules
H H Yasuda (1992)
Makromol. Chem. Macromol. Sci. Part B Polymer G. P. Giuidetti. P. Busi. 1. Giulianelli. R. Zannetti. Elir. Po~vm. J
E J Addink (1927)
Principles of Polymer Chemistry
A. Ravve (1995)
115. 7529; b) A. Razavi, U. Thewalt. 1. Organomet. Chem. 1993.445,111; c)A. Razavi, 1. Ferrara, ibid
A 1 L Razavi (1992)
Makromol. Chem. Rapid Commun . Polym. Sci. Par! A
1. Marks, 1
G H Jeske (1985)
Polrm. Sci. Polrm. Chem. Ed
E Giannetti (1985)
J. Am. Chem. Soc
j D S N R Breslow (1953)
212J Cyclopolymerization of 1.5-hexadiene with heterogeneous Ziegler catalysts: C'. S. Marvel. 1. K. Stille. 1
Polymer-supported reactions in organic synthesis
P. Hodge (1980)
Vyshinskaya. I. M. Khrapava. A. V. Polonskii. N. N. Korneev
L A Nekhaeva
Am. Chern. Soc. Chem. Ber. Organometallics
C L Eisen (1992)
1585: b) ihid. 1991. 29.1595: c) ihid. 1991.29.1603: d) ihid. 1991. 29.1609: e) 1
C D Chien (109)
J. Mol. Calal
H R De Boer (1994)
193J Formation of LLDPE by simultaneous oligomerization of ethene with a nickel catalyst and polymerization by an ansa-metallocene catalyst
Makromol. Chem
j M E Galimberti (1991)
These reactions do not appear to contribute significantly to chain termination in propene polymerization by MAO-activated Cp
Teuben (1049)
Am. Chem. Soc
M R R M Kesti (1992)
1359; b) Makromol. Chem. Rapid Cornman
N Herfert (1992)
8R, 688; Angell'. Chern. In/. Ed. Engl. 1976. 15, 629, and references therein
j W Kaminsky (1976)
Maler. Sci. Eng. Macromolecules
H N Chcng (1992)
Rend. An·ad. na=. Lincei CI. Sci. Fis. Mat. Nat
G P Natta (1956)
Konnecke. 1. Macromol. Sci. Part B Po~vm. Mat. Sci. £ng. Macromolecules
F R De Candia (1988)
Adv. Organomet. Chem. Angew·. Chem. Int. Ed. Engl
H Sinn (1980)
Chem. Soc. Dalton Trans
A Y M L H Vol (1991)
J. Am. Chern. Soc. Science
W R Webster (1983)
Chem. Chern. Int. Ed. Engl
j H Krauledat (1412)
Macromolecules Polym. Sci. Part A
H H Lin (1242)
Siudies in Polymer Science, Vo/. 7. Dekker
S Van Der Ven (1989)
74J Formation ofa zirconocene allyl cation from [Cp,ZrMer and C,H. has been observed in the gas phase
109J The rnmrm and rrnrr pentad signals have identical chemical shifts
Kaminsky, A. Ahlers. N. Moller-Lindenhof Kaminsky, A. Ahlers, O. Rabe. W. Konig in Proc. 4. Sl'mp. Organic Synthesis via Organometallics
H Kaminsky (1216)
Makromol. Chem. Maeromol. Symp
K Hartmann (1992)
Organometallics M. E. Huttenloch. Dissertation. Universitiit Konstanz
M E Huttenloch (1992)
Chern. In!. Ed. Engl. Mol. Catal. Dissertation. Universitiit Konstanz Organometallics
W Roll (1990)
Am. Chem. Soc
P Pino (1987)
1 Cata!' 1964,3,80; b) E. 1. Arlman. ihid
P Cossee (1960)
J. Am. Chem. Soc
j X L Yang (1993)
Added AIMe, increases the steady-state activities In reaction systems of this kind: S. Srinivasa Reddy
Angew. Chem. Chern. Int. Ed. Engl
K Kaminsky (1985)
Makromol. Chem
P Pino (1677)
Am. Chem. Soc
E P Bierwagen (1994)
Guerra in ref433; i) P. Corradini in ref
P Corradini (1329)
63; b) more recent syntheses and structural studies ; 1. A. Ewen, L. Haspeslagh, 1
F R W P Wild (1256)
Polymer Macromolecules Wittmann. A. 1. Lovinger. B. Lotz. ibid. Polymer
A J Welch (1994)
75J A decrease of activities with increasing MAO concentrations is occasionally observed at very high AI:Zr ratios: 1
J. Am. Chem. Soc. Chem. Rev. Organometallics
H Kawamura-Kuribayashi (1991)
Lincei Mem. CI. Sci. Fis. Mat. Nat. Sez. II 1955. 5.73; G. Natta, Angel\'. Chem. 1956
j G Natta
As the mean length of isotactic sequences approaches a value of n;" ~ 100. polypropene tends to crystallize predominantly in the ,-modification [69 b
4919; b) H. Weiss, private communication; c) R. 1
H Weiss (1994)
Aaltonen. 1. Seppalii. Eur. Poll'm. 1
Chern. Soc. Polym. Prepr. (Am. Chem. Soc. Div. Polym. Chem.)
j L Resconi (1025)
Ad!'. Polym. Sci. 1974, 15.31; ibid. 1974,25, 32. b) Olefin insertion under "chain-segment mediated" enantiomorphic-site control, molecular models
A G Zambelli (1133)
j T Tsutsui (1989)
Macromolecules Polymer Macromolecules Preprints Macromolecules
B A Lotz (1988)
Since an olefin complex of the type Zr) has not been observed by spectroscopic or kinetic means so far [32], it is doubtful whether it should be regarded as a reaction intermediate
Rapid Comman
K T Saga (1177)
1181: AngnL Chem. Int, Ed, Engl
A D 1 H G Horton (1991)
Berlin) 1988.20. 421: b) 1 1539: c) ibid
D T Mallin (1988)
WO-93/08221. 1992: b) 1. Stevens. Proc. MetCan Houston 1993. 157: in ref'. [611
S.-Y R Lai (1993)
j L G Cavallo (260)
Organometallin 1990. 9 . .1098; b) N. Piccolrovazzi. Dissertation. Eidgenossische Techni ,che Hochschu1e Zurich
N P Piccolrovazzi (1989)
Similar but less pronounced reductions to the Zr'" stage have been reported also for Cp,ZrCI,/MAO catalyst systems. especially in the presence ofethene
This study yields a-probably exaggerated-estimate of ca. 20 kJ mol-I for the agostic stabilization of the insertion transition state
M H Prosenc (1992)
83J While hydrocyclization of 1,6-[D,J-1.5-hexadiene with a scandocene catalyst gave a stereo kinetic isotope effect of k
Ryan in ref
R A J Newmark (1993)
Organomet. Chefn
W Roll (1987)
J. Polym. Sci. Part B
B Lotz (1986)
Organomel. Chern
B Rieger (1992)
Am. Chern. Soc
j W E Piers (1990)
Soga. Mokromol. Chem. Rapid Commun
T K Shiono (1992)
Berry in Comprehensive Polymer Science
P T 1 G Tait (1986)
181J Equation 1', ~ k lJ /k J2 thus pertains to a catalyst center which had previously inserted monomer L'2 = k22/k21 to one with monomer 2 as the last inserted 1I1llt
Bruckner in ref. [6h], p. 499; e) structure of the {i-modification
S S V Bruckner (1989)
PoiI'm. Mater. Sci. Eng. 1992.67.303: b) Polrmer 1993.34. 1729: c) H. Schwager, KUlIStstofJe 1992
F M Mirabella (1993)
Reidel, Dordrecht, 1986; b) 1. 1. Eisch
R B Seymour (1009)
103: f) w. Kaminsky. A. Bark. R. Spiehl. N. Moller-Lindenhof. S. Niedboda in ref
M Kaminsky (601)
Makrolllol. Chelll. Fenzl. R. Mynott. Z. Naturjorsch. B
D G Schnell (1974)
J. Schwartz (1987)
Macromolecules Zambelli. C. Pellecchia. Pmc. MetCon Houston
C A Pellecchia (378)
Morokuma, 1. Am. Chem. Soc. 1984, 106,4625; c) O. Eisenstein, ¥. Jean, ihid
R B Calvert (1177)
Orf{anometallics J. Am. Chern. Soc. Organometallics
R F Jordan (1041)
83: b) W. Kaminsky. A. Bark. I. Dake in ref. [6aJ. p. 425: c) W
A Kaminsky (1989)
H F Sinn (1963)
Mogstad. R. M. Waymouth. 1. Macromol. Sci. Chem. Ed
j L G W Resconi (1225)
The overall productivities of these heterogenized metallocene catalysts, per g of support and catalyst, are about 50% of those of recent heterogeneous, MgCI,-supported catalysts
Wagemann, Nachr. Chern. Tech. Lab
Polym. Prepr. lpn. Chem. Lell. Yamazaki. Slud. Surt: Sci. Calal
S Miya (1853)
C7; b) D. Fischer. Dissertation. Universitiit Freiburg Mulhaupt in ref
D R Fischer (1433)
Macromol. Srmp. Angew. Chem. 104_ Kaminsky, R. Engehausen, K. Zoumis, W. Spaleck, J. Rohrmann, Makromol. Chern. Organometallics
S Dolle (1347)
Dokl. Akad. Nauk SSSREngl. Transl.) A. E. Shilov. J. Polrm. Sci. Part C
A K A E Zefirova (1961)
2151: b) M. Miri. Dissertation. Universitiit Hamburg. 1985: c) W Kaminsky. Stud. Surt: Sci. Ciloi
j A ) W Kaminsky (1985)
G G Natta (1960)
Liehigs Ann. Chern
W P D S Long (1975)
These "dormant" species might still be quite reactive. however, with regard to other important transformations, such as chain termination or catalyst deactivation reactions
Chem. Chem. Int. Ed. Engl
M Bochmann (1634)
Am. Chern. Soc. Macromolecules
K Knoll (1989)
Am. Chern. Acc. Chem. Res
P L Watson (1982)
polymer NMR spectra can be analyzed at even higher resolution levels
A E Today (1981)
Chim. Ind. (Paris) Natta. P. Pino. G. Mazzanti, U. Giannini. 1 Am. ChCln. Soc
j G Natta (1957)
Chim. Ind
G P Natta (1032)
Makromol. Chern. Rapid Commun
T Asanuma (723)
Polym. Sci. Part B
Miyazawa (1963)
10J cis-Insertion stereochemistry was documented by use of deuterated
Lamanna. 1. N. Schroepfer, PolyhedronACS Symp. Ser
R A Siedle (1990)
Particle forming kinetics for homogeneous and heterogeneous polymerization catalysts
Previously prepared by host-guest inclusion polymerization of 2-methyl- 1,3-pentadiene and subsequent hydrogenation
Eur. Pal. App
H F B Herrmann (1993)
13, 15; b) ibid. 1992. 13. 21; c) ibid
Makromol. Chem. Rapid Commun
C P Pellecchia (223)
S Pasynkicwicz (1990)
Rapid Cornrnun
W Kaminsky (1993)
142); c) M. Farina, Top. Stereochern
F A Woodward (1980)
J. Organomet. Chem. Chem. Ind. Kaminsky. Catal. Today
j Recent Reviews (1994)
6435), or c) by Cp-free homogeneous catalysts (T. Miyatake, K. Mizunuma, M. Kakugo. in ref. [6e], p. 203; T. Dall'Oceo. F. Sartori. G. Vecellio. U. Zucchini, A. Maldotti
R O Day (151)
Organometallics Organometallics
A D Horton (1992)
Am. ('hem. Soc
J C W W M Chien (1991)
Makromol Chem-Macromol Symp
M. Okubo (1990)
Makromol. Chem
D E Cam (1990)
E. Bercaw, 1. Mol. Catal. J. E, Bercaw. 1. Am. Chem. Soc
G E Parkin (1566)
Russ. Chem. Re\,. (Engl. Transl.) Skupinska, Chem. Rn
B A Krentse (613)
Ange,)', Makrotnol. Chem. 1984,120.73; P. Galli. 1. C. Haylock Galli in ref303; e) 1. C. W. Chien in ref
J Kashiwa (1133)
135] ansa-Hafnocene catalysts, such as MAO-activated (en)(ind),HfCI 2 and (en)(thind),HfCI, have similar stereoselectivities as their Zr analogues
H N Cheng (1986)
Rapid Comrnun. 1994, 15,139; Mukrornol. Chern. Phys. 1994,195,3347; K. Soga in ref
K Soga
Miiller in ref
K D Hungenberg
J. Rohrmann. M. Antberg. EliI'. Pat. Appl
j M F Brekner (1992)
1180; I, might thus be reconverted to C by alkyl exchange with the AIMe, content of MAO
209J A strictly alternating insertion -isomerization mechanism has been determined for nickel-based olefin polymerization catalysts
V M G Mohring
Macromolecules Macromol. Symp
P Longo (1015)
R C M Mani (1941)
Rooney, J. Chern. Soc. Faraday Trans
j D T Laverty (1983)
values of ca. 1.1 have been obtained at temperatures between -20 and -60 T with reaction systems containing CpTa(butadiene )Me, or its heptamethyl analogue in the presence of MAO: K
M Polyethenes With M Wi (1623)
613: c) G. W. Knight, S. Lai in ref. [6d]. p. 226: d) A. B. Furtek, Proc. MetCon
D R W Van Der Sanden (1992)
Macromolecules 1982. 15, 1242. c) Evidence from 13C NMR spectroscopy
Y Fusco (1980)

This paper is referenced by
Bimodal polypropylene through binary metallocene catalytic systems: comparison between hybrid and mixed heterogeneous catalysts
B. Paredes (2016)
The trigonal form of i-PP in random C3/C5/C6 terpolymers
L. Boragno (2013)
Observing a Homogeneous Ziegler Catalyst Precursor at Work: Insertion Reactions into the Zirconium – Carbon Bond of the (Butadiene)ZrCp2/B(C6F5)3 Addition Product
B. Temme (1996)
Recent fundamental studies on migratory insertion into metal-carbon bonds
K. Cavell (1996)
Transition metals in organic synthesis. Highlights for the year 1995
L. Hegedus (1997)
Synthesis and reactivity of new silyl substituted monocyclopentadienyl zirconium complexes. X-ray molecular structure of [Zrη5-C5H4 (SiMe2CH2Ph)(CH2Ph)3]
Gemma Ciruelo (1997)
Homogeneous Chromium Catalysts for Olefin Polymerization
K. Theopold (1998)
Observation of the primary Zr–C insertion products in the reaction of the (butadiene)zirconocene/B(C6F5)3-betaine Ziegler catalyst system with reactive alkynes
J. Karl (1998)
Synthesis of racemic chiral-at-metal complexes of the group 4 metals by a lithium chloride catalysed ligand redistribution reaction
Suzanne R L Hart (1998)
Activation of biscyclopentadienyl hydride complexes of titanium and aluminum by NH- and OH-acids in the reactions of hydrogenation of olefins. Crystal and molecular structures of {(η5−Cp)2Ti(μ−H)2AlH]μ−N(C2H4)4O]}2 and [(η5−Cp)2Ti(μ−H(2AlH]2(μ−OC2H4OMe)[(μ1:μ5−C5H4)Ti(μ5−Cp)(μ−H)]2*
A. I. Sizov (1998)
Cis- and trans-titanium complexes with doubly silyl-bridged dicyclopentadienyl ligands: molecular structure of [(TiCl)2(μ-O){(SiMe2)2(η5-C5H3)2}]2(μ-O)2
A. Çano (1998)
Design of postmetallocene Schiff base-like catalytic systems for polymerization of olefins: XII. Synthesis of tetradentate bis-salicylaldehyde imine ligands
I. Oleinik (2009)
Synthesis and Structure of Silicon-Bridged Boratabenzene Fluorenyl Rare-Earth Metal Complexes
C. Wang (2016)
Structural Analysis of Transition Metal -X Substituent Interactions. Toward the Use of Soft Computing Methods for Catalyst Modeling
T. Cundari (2000)
Synthesis and Application of Bis [ 1 , 2-( 4-aryl-2-alkyl-1 H-inden-1-yl ) ] Ethane as an Efficient ` Ligand for Preparation of Olefin Polymerization Catalysts
V. Lotfi (2019)
Formation and Structures of [1,2–Bis(N-tert-butylcarbamoyl)cyclopentadienyl]zirconium Complexes – Coordination Chemistry of a “Fulvenologous” Malonic Amide Anion Ligand System
Katrin Klass (1999)
Copolymerization of propylene with higher α‐olefins in the presence of the syndiospecific catalyst i‐Pr(Cp)(9‐Flu)ZrCl2/MAO
S. Graef (2002)
Synthesis, structures and polymerization catalytic properties of germyl-bridged bis(cyclopentadienyl) metallocenes
S. Xu (2002)
Synthesis, crystal structure and catalysis for polyethylene of a paramagnetic chromium complex [(η5-CpSi)Cr(μ-Cl)Cl]2 [Cpsi = (C5H4)Si(CH3)2(C6H5)]
Y. Xu (2002)
Dinuclear ansa zirconocene complexes containing a sandwich and a half-sandwich moiety as catalysts for the polymerization of ethylene
H. Alt (2002)
Metalorganic Chemistry in the Gas Phase: Insight into Catalysis
D. Plattner (2003)
DFT study of hydrogenolysis as a chain transfer mechanism in olefin polymerisation catalysed by nickel-diimine-type catalysts
J. Ramos (2003)
Isospecific Bulk Polymerization of Propylene with the Use of ansa-Metallocenes as a Mixture of rac and meso Isomers
P. M. Nedorezova (2003)
Structure–property transition‐state model for the copolymerization of ethene and 1‐hexene with experimental and theoretical applications to novel disilylene‐bridged zirconocenes
H. Wigum (2003)
Kinetics of homo- and copolymerizations of ethylene by zirconocarborane catalyst cocatalyzed by AlR3 or methyl aluminoxane
Il Kim (2003)
Studies of ethylene-styrene copolymerization with dinuclear constrained geometry complexes with methyl substitution at the five-membered ring in indenyl of [Ti(η5 :η1-C9H5SiMe2NCMe3)]2 [CH2]n
S. Noh (2004)
Palladium-catalyzed arylation of ethylene. A synthetic route to styrenes, stilbenes, and poly(phenylene vinylene)s
J. Kiji (1999)
Rheology of metallocene‐catalyzed monomodal and bimodal polyethylenes
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Polymerisation of acrylonitrile with di(organoimido)chromium(VI) complexes
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