Post-metallocenes: New bis(pyrrolyl-2-aldiminato) titanium complexes for ethylene polymerization

Chemistry Letters

Volumn , Issue 11, 2000, Pages 1270-1271

  Yoshida, Yasunori ^a   Matsui, Shigekazu ^a   Takagi, Yukihiro ^a   Mitani, Makoto ^a   Nitabaru, Masatoshi ^a   Nakano, Takashi ^a   Tanaka, Hidetsugu ^a   Fujita, Terunori ^a  

^a MITSUI CHEMICALS INC   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0034344680     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2000.1270     Document Type: Article

References (26)

1. H. Sinn, W. Kaminsky, H. J. Vollmer, and R. Woldt, Angew. Chem., Int. Ed. Engl., 19, 390 (1980).
2. a) G. J. P. Biritovsek, V. C. Gibson, and D. F. Wass, Angew. Chem., Int. Ed. Engl., 38, 428 (1999).
3. b) S. D. Ittel, L. K. Johnson, and M. Brookhart, Chem. Rev., 100, 1169 (2000).
4. a) L. K. Johnson, C. M. Killian, and M. S. Broookhart, J. Am. Chem. Soc., 117, 6414 (1995).
5. b) C. M. Killian, D. J. Temple, L. K. Johnson, and M. S. Brookhart, J. Am. Chem. Soc., 118, 11664 (1996).
6. c) C. Wang, A. Friedrich, T. R. Younkin, R. T. Li, R. H. Grubbs, A. Bansleben, and M. W. Day, Organometallics, 17, 3149 (1998).
7. d) B. L. Small, M. S. Brookhart, and A. A. Bennett, J. Am. Chem. Soc., 120, 4049 (1998).
8. e) G. J. P. Britovsec, V. C. Gibson, B. S. Kimberley, J. Maddox, S. J. McTavish, G. A. Solan, A. P. White, and D. J. Williams, Chem. Commun., 1998, 849.
9. a) T. Fujita, M. Mitani, Y, Tohi, H. Makio, and N. Kihara, MetCon'99, Houston, June, 1999, Abstr.
10. b) T. Fujita, M. Mitani, S. Matsui, J. Saito, Y. Tohi, T. Nakano, and H. Tanaka, Proceeding of the 3rd Seminar on Science and Technology - Catalysis - , Fukuoka, March 2000, Abstr., 131.
11. c) S. Matsui, M. Mitani, J. Saito, Y. Tohi, H. Makio, H. Tanaka, and T. Fujita, Chem. Lett., 1999, 1263.
12. d) S. Matsui, M. Mitani, J. Saito, N. Matsukawa, H. Tanaka, T. Nakano, and T. Fujita, Chem. Lett., 2000, 554.
13. e) S. Matsui and T. Fujita, Catal. Today, in press.
14. a) J. D. Scollard, D. H. McConville, N. C. Payne, and J. J. Vittal, Macromolecules, 29, 5241 (1996).
15. b) K. Nomura, N. Naga, and K. Takaoki, Macromolecules, 31, 8009 (1998).
16. c) Y. M. Leon, S. J. Park, J. Heo, and K. Kim, Organometallics, 17, 3161 (1998).
17. d) F. J. Schattenmann, R. R. Schrock, and W. M. Davis, Organometallics, 17, 989 (1998).
18. a) S. Matsui, Y. Tohi, M. Mitani, J. Saito, H. Makio, H. Tanaka, M. Nitabaru, T. Nakano, and T. Fujita, Chem. Lett., 1999, 1065.
19. b) D. W. Stephan, F. Guérin, R. E. v. H. Spence, L. Kock, X. Gao, S. J. Brouwn, J. W. Swabey, Q. Wang, W. Xu, P. Zoricak, and D. G. Harrison, Organometallics, 18, 2046 (1999).
20. V. C. Gibson, P. J. Maddox, C. Newton, C. Redshaw, G. A. Solan, A. J. P. White, and D. J. Williams, Chem. Commun., 1998, 1651.
21. S. Matsui, M. Nitabaru, Y. Yoshida, M. Mitani, and T. Fujita, EP Patent 1008595 (2000); Chem. Abstr., 133, 43969 (2000).
22. 2 solutions.
23. I. Kim, Y. Nishihara, R. F. Jordan, R. D. Rogers, A. L. Rheingold, and G. P. A. Yap, Organometallics, 16, 3314 (1997).
24. DFT calculation has been widely used for structural determination of transition metal complexes, cf.; L. Deng, T. Zieglar, T. K. Woo, P. Margl, and L. Fan, Organometallics, 17, 3240 (1998). All calculations were performed using gradient corrected density functional method BLYP, by means of the Amsterdam Density Functional (ADF) program. We used the electronic configuration of molecular system described by a triple -ζ basis set on the metal center. A double -ζ basis set was used for ethylene as a monomer and methyl group as a model of polymer chain. For the other atoms, a single -ζ basis set was used.
25. 4 were added, in this order, to the solution.
26. 0.7; R. Chiang, J. Polymer Sci., 36, 91 (1959). Intrinsic viscosity [η] was measured in decalin at 135 °C using an Ubbelohde viscometer. Preparation of intrinsic viscosity measurement solution; 25 mg of polyethylene was dissolved into 25 mL of decalin at 135 °C.