|
1
|
Effect of external electron donor on stereoselective Copolymerization of isoprene and butadiene with MgCl2-Supported Ziegler-Natta catalyst. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
|
2
|
Nifant'ev IE, Ivchenko PV, Vinogradov AA. Heterocycle-fused cyclopentadienyl metal complexes: Heterocene synthesis, structure and catalytic applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213515] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
|
3
|
Ratanasak M, Hasegawa JY, Parasuk V. Roles of Salicylate Donors in Enhancement of Productivity and Isotacticity of Ziegler-Natta Catalyzed Propylene Polymerization. Polymers (Basel) 2020; 12:polym12040883. [PMID: 32290323 PMCID: PMC7240445 DOI: 10.3390/polym12040883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/26/2020] [Accepted: 04/07/2020] [Indexed: 11/26/2022] Open
Abstract
Roles of internal salicylate donors (SID) in enhancing activity and stereoselectivity of Ziegler–Natta catalyzed propylene (PP) polymerization were examined using DFT calculations. Five salicylate donors were studied. The chelate mode is the preferred adsorption mode. The linear relationship (R2 = 0.96) between calculated adsorption energies (Eads) of five SIDs and the experimental PP activities was observed. Thus, the SID with the strongest adsorption energy will provide the highest activity in agreement with our previous studies. Compared with diisobutyl phthalate (DIBP), which is the industrial electron donor, SID has stronger Eads. The insertion step, which involves the π-complex formation (∆Eπ) and the insertion activation or intrinsic activation energy (Ea) for PP polymerization was also examined. The relation between ln(activity) and apparent activation energy (Ea(app)), which is ∆Eπ + Ea for the primary(1,2)-re insertion with R2 = 0.99, was observed. The salicylate donor also has a lower Ea(app) than that of DIBP. This explains the better catalytic performance of SID. Our results also demonstrated that the size and the type of hydrocarbon substituents play a key role in controlling stereoselectivity and activity. In addition, we found a good relationship between Eads and both intrinsic (Ea) and apparent (Ea(app)) activation energies of five salicylate donors with R2 of 0.90 and 0.97, respectively.
Collapse
Affiliation(s)
- Manussada Ratanasak
- Institute for Catalysis, Hokkaido University, Kita 21, Nishi 10, Sapporo, Hokkaido 001-0021, Japan; (M.R.); (J.-y.H.)
| | - Jun-ya Hasegawa
- Institute for Catalysis, Hokkaido University, Kita 21, Nishi 10, Sapporo, Hokkaido 001-0021, Japan; (M.R.); (J.-y.H.)
| | - Vudhichai Parasuk
- Center of Excellence in Computational Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +66-2218-7603
| |
Collapse
|
|
4
|
Bahri-Laleh N, Hanifpour A, Mirmohammadi SA, Poater A, Nekoomanesh-Haghighi M, Talarico G, Cavallo L. Computational modeling of heterogeneous Ziegler-Natta catalysts for olefins polymerization. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.06.005] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
|
5
|
Corradini P. The impact of the discovery of stereoregular polymers in macromolecular science. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19950890104] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
|
6
|
Guerra G, Corradini P, Cavallo L, Vacatello M. Molecular mechanics and mechanisms of regulation of the stereospecificity in Ziegler-Natta catalysis. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19950890130] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
|
7
|
|
|
8
|
Galimberti M, Martini E, Piemontesi F, Sartori F, Camurati I, Resconi L, Albizzati E. New polyolefin elastomers from metallocenes. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19950890126] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
|
9
|
|
|
10
|
Guerra G, Cavallo L, Venditto V, Vacatello M, Corradini P. Molecular mechanics and the polymerization mechanism of homogeneous and heterogeneous Ziegler-Natta catalysts. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19930690125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
|
11
|
Surface analytical approach to TiCl3-based Ziegler–Natta catalysts combined with microstructure analysis of polymer. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.05.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
|
12
|
Talebi S, Duchateau R, Rastogi S, Kaschta J, Peters GWM, Lemstra PJ. Molar Mass and Molecular Weight Distribution Determination Of UHMWPE Synthesized Using a Living Homogeneous Catalyst. Macromolecules 2010. [DOI: 10.1021/ma902297b] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Saeid Talebi
- Department of Chemical Engineering and Chemistry
| | | | - Sanjay Rastogi
- Department of Chemical Engineering and Chemistry
- Department of Materials, Loughborough University, Leicestershire LE11 3TU, Loughborough, England, United Kingdom
| | - Joachim Kaschta
- Institute for Materials Science, University of Erlangen-Nürnberg, Erlangen, Germany
| | | | | |
Collapse
|
|
13
|
Mercandelli P, Sironi A, Resconi L, Camurati I. Comparing propene polymerization with 1-butene polymerization catalyzed by MAO-activated C2- and C1-symmetric zirconocenes: An experimental and computational study on the influence of olefin size on stereoselectivity. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.06.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
|
14
|
Horton AD, Orpen AG. Strukturell deformierter Ligand in Dizirconocen-Kationen mit Elektronenmangel - ungewöhnliche 1,2- und 1,1-Dimetallioalken. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.19921040733] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
|
15
|
Silanes I, Ugalde JM. Comparative Study of Various Mechanisms for Metallocene-Catalyzed α-Olefin Polymerization. Organometallics 2005. [DOI: 10.1021/om0503139] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Iñaki Silanes
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
| | - Jesus M. Ugalde
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
| |
Collapse
|
|
16
|
Milano G, Cavallo L, Guerra G. Site chirality as a messenger in chain-end stereocontrolled propene polymerization. J Am Chem Soc 2002; 124:13368-9. [PMID: 12418873 DOI: 10.1021/ja026675e] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The origin of stereoselectivity in the chain-end controlled syndiospecific polymerization of propene with octahedral Ti-catalysts is unclear. We present a possible mechanism which is based on the site chirality as a messenger of information between the chirality of the chain-end and the chirality of monomer insertion which can operate for secondary propagation. This mechanism could be operative also for the industrially relevant V-based homogeneous catalysts.
Collapse
Affiliation(s)
- Giuseppe Milano
- Dipartimento di Chimica, Università di Salerno, I-84081 Baronissi (SA), Italy
| | | | | |
Collapse
|
|
17
|
Paolo Corradini. Macromolecules 2002. [DOI: 10.1021/ma020836h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
|
18
|
Schmidt J, Risse T, Hamann H, Freund HJ. Characterization of a model Ziegler–Natta catalyst for ethylene polymerization. J Chem Phys 2002. [DOI: 10.1063/1.1479722] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
|
19
|
Costabile C, Milano G, Cavallo L, Guerra G. Stereoselectivity and Chemoselectivity in Ziegler−Natta Polymerizations of Conjugated Dienes. 1. Monomers with Low-Energy s-Cis η4 Coordination. Macromolecules 2001. [DOI: 10.1021/ma010673h] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chiara Costabile
- Dipartimento di Chimica, Universita' di Salerno. Via Salvador Allende, I-84081 Baronissi, Salerno, Italy, Dipartimento di Chimica, Universita' “Federico II” di Napoli, and Complesso Monte S. Angelo I-80126, Napoli, Italy
| | - Giuseppe Milano
- Dipartimento di Chimica, Universita' di Salerno. Via Salvador Allende, I-84081 Baronissi, Salerno, Italy, Dipartimento di Chimica, Universita' “Federico II” di Napoli, and Complesso Monte S. Angelo I-80126, Napoli, Italy
| | - Luigi Cavallo
- Dipartimento di Chimica, Universita' di Salerno. Via Salvador Allende, I-84081 Baronissi, Salerno, Italy, Dipartimento di Chimica, Universita' “Federico II” di Napoli, and Complesso Monte S. Angelo I-80126, Napoli, Italy
| | - Gaetano Guerra
- Dipartimento di Chimica, Universita' di Salerno. Via Salvador Allende, I-84081 Baronissi, Salerno, Italy, Dipartimento di Chimica, Universita' “Federico II” di Napoli, and Complesso Monte S. Angelo I-80126, Napoli, Italy
| |
Collapse
|
|
20
|
Linnolahti M, Pakkanen T, Leino R, Luttikhedde H, Wilén CE, Näsman J. Conformational Preferences of Racemic Ethylene-Bridged Bis(indenyl)-Type Zirconocenes: An ab initio Hartree−Fock Study. Eur J Inorg Chem 2001. [DOI: 10.1002/1099-0682(200108)2001:8<2033::aid-ejic2033>3.0.co;2-k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
|
21
|
|
|
22
|
Kaminsky W. Olefin polymerization catalyzed by metallocenes. ADVANCES IN CATALYSIS 2001. [DOI: 10.1016/s0360-0564(02)46022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
|
|
23
|
|
|
24
|
Angermund K, Fink G, Jensen VR, Kleinschmidt R. Toward Quantitative Prediction of Stereospecificity of Metallocene-Based Catalysts for alpha-Olefin Polymerization. Chem Rev 2000; 100:1457-70. [PMID: 11749271 DOI: 10.1021/cr990373m] [Citation(s) in RCA: 146] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K Angermund
- Max-Planck Institut für Kohlenforschung, D-45470 Mülheim an der Ruhr, Germany
| | | | | | | |
Collapse
|
|
25
|
Coates GW. Precise control of polyolefin stereochemistry using single-site metal catalysts. Chem Rev 2000; 100:1223-52. [PMID: 11749265 DOI: 10.1021/cr990286u] [Citation(s) in RCA: 1060] [Impact Index Per Article: 44.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G W Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301
| |
Collapse
|
|
26
|
Resconi L, Cavallo L, Fait A, Piemontesi F. Selectivity in propene polymerization with metallocene catalysts. Chem Rev 2000; 100:1253-346. [PMID: 11749266 DOI: 10.1021/cr9804691] [Citation(s) in RCA: 1073] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- L Resconi
- Montell Polyolefins, Centro Ricerche G. Natta, P.le G. Donegani 12, 44100 Ferrara, Italy, and Dipartimento di Chimica, Università di Napoli "Federico II", Via Mezzocannone 4, 80134 Napoli, Italy
| | | | | | | |
Collapse
|
|
27
|
Lohrenz JC, Bühl M, Weber M, Thiel W. A density functional study on the formation of stereoerrors in the stereoselective propene polymerization with zirconocene catalysts. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00438-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
|
28
|
Dedieu A. Theoretical Treatment of Organometallic Reaction Mechanisms and Catalysis. TOP ORGANOMETAL CHEM 1999. [DOI: 10.1007/3-540-69707-1_3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
|
|
29
|
Busico V, Cipullo R, Talarico G, Segre AL, Caporaso L. High-Field 13C NMR Characterization of Ethene-1-13C/Propene Copolymers Prepared with Cs-Symmetric ansa-Metallocene Catalysts: A Deeper Insight into the Regio- and Stereoselectivity of Syndiotactic Propene Polymerization. Macromolecules 1998. [DOI: 10.1021/ma9810417] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
|
30
|
Magni E, Somorjai GA. Preparation and Surface Science Characterization of Model Ziegler−Natta Catalysts. Role of Undercoordinated Surface Magnesium Atoms in the Chemisorption of TiCl4 on MgCl2 Thin Films. J Phys Chem B 1998. [DOI: 10.1021/jp982017y] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Enrico Magni
- Department of Chemistry, University of California, Berkeley, California 94720-1460, and Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720
| | - Gabor A. Somorjai
- Department of Chemistry, University of California, Berkeley, California 94720-1460, and Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720
| |
Collapse
|
|
31
|
Kravchenko R, Masood A, Waymouth RM, Myers CL. Strategies for Synthesis of Elastomeric Polypropylene: Fluxional Metallocenes withC1-Symmetry. J Am Chem Soc 1998. [DOI: 10.1021/ja973414+] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
|
32
|
C2-symmetric ansa-metallocene catalysts for propene polymerization: Stereoselectivity and enantioselectivity. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s1381-1169(97)00162-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
|
33
|
Xu J, Feng L, Yang S, Yang Y, Kong X. Influence of Electron Donors on the Tacticity and the Composition Distribution of Propylene−Butene Copolymers Produced by Supported Ziegler−Natta Catalysts. Macromolecules 1997. [DOI: 10.1021/ma9706642] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
|
34
|
Busico V, Cipullo R, Talarico G, Segre AL, Chadwick JC. New Evidence on the Nature of the Active Sites in Heterogeneous Ziegler−Natta Catalysts for Propene Polymerization. Macromolecules 1997. [DOI: 10.1021/ma9704673] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vincenzo Busico
- Dipartimento di Chimica, Università di Napoli “Federico II”, Via Mezzocannone 4, 80134 Napoli, Italy
| | - Roberta Cipullo
- Dipartimento di Chimica, Università di Napoli “Federico II”, Via Mezzocannone 4, 80134 Napoli, Italy
| | - Giovanni Talarico
- Dipartimento di Chimica, Università di Napoli “Federico II”, Via Mezzocannone 4, 80134 Napoli, Italy
| | - Anna Laura Segre
- Istituto di Strutturistica Chimica and NMR Service, CNR Research Area, C.P. 10 Monterotondo Stazione, 00015 Rome, Italy
| | - John C. Chadwick
- Montell Polyolefins, “G. Natta” Research Centre, 44100 Ferrara, Italy
| |
Collapse
|
|
35
|
van der Leek Y, Angermund K, Reffke M, Kleinschmidt R, Goretzki R, Fink G. On the Mechanism of Stereospecific Polymerization—Development of a Universal Model to Demonstrate the Relationship Between Metallocene Structure and Polymer Microstructure. Chemistry 1997. [DOI: 10.1002/chem.19970030414] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
|
36
|
Morini G, Albizzati E, Balbontin G, Mingozzi I, Sacchi MC, Forlini F, Tritto I. Microstructure Distribution of Polypropylenes Obtained in the Presence of Traditional Phthalate/Silane and Novel Diether Donors: A Tool for Understanding the Role of Electron Donors in MgCl2-Supported Ziegler−Natta Catalysts. Macromolecules 1996. [DOI: 10.1021/ma960070j] [Citation(s) in RCA: 116] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
|
37
|
Cavallo L, Corradini P, Guerra G, Resconi L. Doubly Bridged ansa-Zirconocenes Based on the Norbornadiene Skeleton: A Quantum Mechanical and Molecular Mechanics Study. Organometallics 1996. [DOI: 10.1021/om9502704] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luigi Cavallo
- Dipartimento di Chimica, Università di Napoli, Via Mezzocannone 4, I-80134, Napoli, Italy, and Montell Polyolefins, G. Natta Research Center, Piazzale G. Donegani 12, I-44100, Ferrara, Italy
| | - Paolo Corradini
- Dipartimento di Chimica, Università di Napoli, Via Mezzocannone 4, I-80134, Napoli, Italy, and Montell Polyolefins, G. Natta Research Center, Piazzale G. Donegani 12, I-44100, Ferrara, Italy
| | - Gaetano Guerra
- Dipartimento di Chimica, Università di Napoli, Via Mezzocannone 4, I-80134, Napoli, Italy, and Montell Polyolefins, G. Natta Research Center, Piazzale G. Donegani 12, I-44100, Ferrara, Italy
| | - Luigi Resconi
- Dipartimento di Chimica, Università di Napoli, Via Mezzocannone 4, I-80134, Napoli, Italy, and Montell Polyolefins, G. Natta Research Center, Piazzale G. Donegani 12, I-44100, Ferrara, Italy
| |
Collapse
|
|
38
|
Cavallo L, Guerra G. A Density Functional and Molecular Mechanics Study Of β-Hydrogen Transfer in Homogeneous Ziegler−Natta Catalysis. Macromolecules 1996. [DOI: 10.1021/ma9511412] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Luigi Cavallo
- Dipartimenti di Chimica, Università “Federico II” di Napoli, Via Mezzocannone 4, I-80134, Napoli, Italy, and Università di Salerno, I-84081 Baronissi (SA), Italy
| | - Gaetano Guerra
- Dipartimenti di Chimica, Università “Federico II” di Napoli, Via Mezzocannone 4, I-80134, Napoli, Italy, and Università di Salerno, I-84081 Baronissi (SA), Italy
| |
Collapse
|
|
39
|
|
|
40
|
Arndt M, Engehausen R, Kaminsky W, Zoumis K. Hydrooligomerization of cycloolefins -a view of the microstructure of polynorbornene. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/1381-1169(95)00083-6] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
|
41
|
Lohrenz JC, Woo TK, Fan L, Ziegler T. A density functional study on the insertion mechanism and chain termination in Kaminsky-type catalysts; comparison of frontside and backside attack. J Organomet Chem 1995. [DOI: 10.1016/0022-328x(95)00110-c] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
|
42
|
Brintzinger HH, Fischer D, Mülhaupt R, Rieger B, Waymouth R. Stereospezifische Olefinpolymerisation mit chiralen Metallocenkatalysatoren. Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951071104] [Citation(s) in RCA: 490] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
|
43
|
Gupta VK, Satish S, Bhardwaj IS. Metallocene Complexes of Group 4 Elements in the Polymerization of Monoolefins. ACTA ACUST UNITED AC 1994. [DOI: 10.1080/15321799408014164] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
|
44
|
Horton AD, Orpen AG. A Structurally Distorted Ligand in an Electron-Deficient Dizirconocene Cation: Unusual 1,2- and 1,1-Dimetallioalkenes. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/anie.199208761] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
|
45
|
Structural analogies between homogeneous and heterogeneous catalysts for the stereospecific polymerization of 1-alkenes. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0304-5102(92)80260-n] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
|
46
|
Busico V, Corradini P, De Martino L, Trifuoggi M. A reinvestigation of β-TiCl3—II. Catalytic activity in propene polymerization. Eur Polym J 1992. [DOI: 10.1016/0014-3057(92)90127-n] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|