Novel trityl activators with new weakly coordinating anions derived from C6F41,2-[B(C6F5)2] 2: Synthesis, strussctures, and olefin polymerization behavior

Organometallics

Volumn 19, Issue 9, 2000, Pages 1619-1621

  Clifford Williams, V ^a   Irvine, Geoffry J ^a   Piers, Warren E ^a   Li, Zengmin ^b   Collins, Scott ^b   Clegg, William ^c   Elsegood, Mark R J ^c   Marder, Todd B ^d  

^a UNIVERSITY OF CALGARY   (Canada)

^b UNIVERSITY OF WATERLOO   (Canada)

^c NEWCASTLE UNIVERSITY   (United Kingdom)

^d DURHAM UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CHEMICAL ACTIVATION; FLUORINE COMPOUNDS; NEGATIVE IONS; OLEFINS; POLYMERIZATION; SALTS; STOICHIOMETRY;

TRITYL SALTS;

ORGANOMETALLICS;

EID: 0033752162     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om0001974     Document Type: Article

References (37)

1. (a) Bochmann, M.; Lancaster, S. J. J. Organomet. Chem. 1992, 434, C1.
2. (b) Chien, J. C. W.; Tsai, W. M.; Rausch, M. D. J. Am. Chem. Soc. 1991, 113, 8570.
3. (c) Jia, L.; Yang, X.; Stern, C. L.; Marks, T. J. Organometallics 1997, 16, 842.
4. Chen, Y.-X.; Metz, M. V.; Li, L.; Stern, C. L.; Marks, T. J. J. Am. Chem. Soc. 1998, 120, 6287.
5. (a) Yang, X.; Stern, C. L.; Marks, T. J. J. Am. Chem. Soc. 1991, 113, 3623.
6. (b) Ewen, J. A.; Edler, M. J. Chem. Abstr. 1991, 115, 136998g, 256895t.
7. (c) Spence, R. E. v. H.; Piers, W. E.; Sun, Y.; Parvez, M.; MacGillivray, L. R.; Zaworotko, M. J. Organometallics 1998, 17, 2459.
8. (d) Luo, L.; Marks, T. J. Top. Catal. 1999, 7, 97 and references therein.
9. (e) Piers, W. E.; Chivers, T. Chem. Soc. Rev. 1997, 345.
10. (a) Deck, P. A.; Beswick, C. L.; Marks, T. J. J. Am. Chem. Soc. 1998, 120, 1772.
11. (b) Sun, Y.; Spence, R. E. v H.; Piers, W. E.; Parvez, M.; Yap, G. P. A. J. Am. Chem. Soc. 1997, 119, 5132.
12. Williams, V. C.; Piers, W. E.; Clegg, W.; Collins, S.; Marder, T. B. J. Am. Chem. Soc. 1999, 121, 3244.
13. Williams, V. C.; Dai, C.; Li, Z.; Collins, S.; Piers, W. E.; Clegg, W. C.; Elsegood, M. R. J.; Marder, T. B. Angew. Chem., Int. Ed. Engl. 1999, 38, 3695.
14. Bochmann, M.; Lancaster, S. L. Angew. Chem., Int. Ed. Engl. 1994, 33, 1634.
15. (a) Jia, L.; Yang, X.; Stern, C.; Marks, T. J. Organometallics 1994, 13, 3755.
16. (b) Marks, T. J.; Jia, L.; Yang, X. U.S. Patent 5,447,895, 1995 (Northwestern University).
17. (c) Lancaster, S. J.; Walker, D. A.; Thornton-Pett, M.; Bochmann, M. Chem. Commun. 1999, 1533.
18. Shriver, D. F.; Biallas, M. J. J. Am. Chem. Soc. 1967, 89, 1078.
19. -1, final R indices R1 = 0.0446 and wR2 = 0.1158, GOF = 1.061, 15 restraints, 733 parameters. The restraints were applied to geometry and anisotropic displacement parameters of atoms in disordered solvent molecules, to aid their refinement. There were no restraints on the cations and anions.
20. (a) Lambert, J. B. Top. Stereochem. 1971, 6, 19.
21. (b) Rauk, A.; Andose, J. D.; Frick, W. G.; Tang, R.; Mislow, K. J. Am. Chem. Soc. 1971, 93, 6507.
22. 3 oxygen and the other pyramidal: Binder, H.; Matheis, W.; Deiseroth, H.-J.; Fu-Son, H. Z. Naturforsch., B 1983, 38, 554.
23. Yang, X.; Stern, C. L.; Marks, T. J. J. Am. Chem. Soc. 1994, 116, 10015.
24. (a) Bochmann, M.; Lancaster, S. L. Angew. Chem., Int. Ed. Engl. 1994,33,1634.
25. (b) Yang, X.; Stern, C. L.; Marks, T. J. Organometallics 1991,10,840.
26. (c) Beck, S.; Prosenc, M.-H.; Brintzinger, H. H.; Goretzki, R.; Herfert, N.; Fink, G. J. Mol. Catal. 1996, 111, 67.
27. (d) Köhler, K.; Piers, W. E.; Xin, S.; Feng, Y.; Bravakis, A. M.; Jarvis, A. P.; Collins, S.; Clegg, W.; Yap, G. P. A.; Marder, T. B. Organometallics 1998, 17, 3557.
28. Siedle, A. R.; Newmark, R. A.; Lamanna, W. M.; Schroepfer, J. N. Polyhedron 1990, 9, 301.
29. Bochmann, M.; Cuenca, T.; Hardey, D. T. J. Organomet. Chem. 1994, 484, C10.
30. 14d
31. 3OH: Parks, D. J.; Piers, W. E.; Yap, G. P. A. Organometallics 1998, 17, 5492.
32. Gray, D. R.; Brubaker, C. H., Jr. Inorg. Chem. 1971, 10, 2143.
33. 20d substituents are known, but those with less bulky groups tend to form dimers and undergo other side reactions,
34. (b) Collins, S.; Koene, B. E.; Ramachandran, R.; Taylor, N. J. Organometallics 1991, 10, 2092.
35. (c) Hong, Y.; Kuntz, B. A.; Collins, S. Organometallics 1993, 12, 964.
36. (d) Wu, Z.; Jordan, R. F.; Petersen, J. L. J. Am. Chem. Soc. 1995, 117, 5867.
37. 2 in toluene (20 mL each) were sequentially introduced in the same manner so as to give a final concentration of 2 μM for each. Ethylene uptake was monitored using a calibrated mass flow meter; constant monomer flow was observed typically within 5 min after catalyst introduction. The temperature was controlled (to ca. ± 2 °C) using an external cooling jacket connected to a recirculating heating/cooling bath and was monitored by an RTD sensor placed in a thermocouple well in contact with the reactor contents. Polymerizations were conducted for a time period corresponding to 20-30 min, following attainment of steady-state conditions (i.e., constant T and ethylene flow) in the reactor, and polymerizations were quenched by the addition of MeOH through an overpressurized sample vessel. Polymer samples were isolated by filtration, washed with MeOH, and dried in vacuo at 80 °C for 24 h prior to weighing.