Synthesis and reactivity of bis(alkoxysilylamido)yttrium η2-pyridyl and η2-α-picolyl compounds

Organometallics

Volumn 16, Issue 25, 1997, Pages 5506-5516

  Duchateau, Robbert ^a   Brussee, Edward A C ^a   Meetsma, Auke ^a   Teuben, Jan H ^a  

^a UNIVERSITY OF GRONINGEN   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000832286     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om970540d     Document Type: Article

References (83)

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2. For an overview, see: (a) Schumann, H. Angew. Chem., Int. Ed. Engl. 1984, 23, 474. (b) Evans, W. J. Adv. Organomet. Chem. 1985, 24, 131. (c) Evans, W. J.; Foster, S. E. J. Organomet. Chem. 1992, 433, 79. (d) Schaverien, C. J. Adv. Organomet. Chem. 1994, 36, 283.
3. For an overview, see: (a) Schumann, H. Angew. Chem., Int. Ed. Engl. 1984, 23, 474. (b) Evans, W. J. Adv. Organomet. Chem. 1985, 24, 131. (c) Evans, W. J.; Foster, S. E. J. Organomet. Chem. 1992, 433, 79. (d) Schaverien, C. J. Adv. Organomet. Chem. 1994, 36, 283.
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8. For example, see: (a) Edelmann, F. T. Angew. Chem., Int. Ed. Engl. 1995, 34, 2466. (b) Evans, W. J. New J. Chem. 1995, 19, 525. (c) Reger, D. L.; Lindeman, J. A.; Lebioda, L. Inorg. Chem. 1988, 27, 1890. (d) Oki, A. R.; Zhang, H.; Hosmane, N. S. Organometallics 1991, 10, 2964. (e) Recknagel, A.; Steiner, A.; Noltemeyer, M.; Brooker, S.; Stalke, D.; Edelmann, F. T. J. Organomet. Chem. 1991, 414, 327. (f) Schaverien, C. J.; Orpen, A. G. Inorg. Chem. 1991, 30, 4968. (g) Schaverien, C. J.; Meijboom, N.; Orpen, A. G. J. Chem. Soc., Chem. Commun. 1992, 124. (h) Bazan, G. C.; Schaefer, W. P.; Bercaw, J. E. Organometallics 1993. 12, 2126. (i) Karsch, H. H.; Ferazin, G.; Kooijman, H.; Steigelmann, O.; Schier, A.; Bissinger, P.; Hiller, W. J. Organomet. Chem. 1994, 482, 151. (j) Shapiro, P. J.; Cotter, W. D.; Schaefer, W. P.; Labinger, J. A.; Bercaw, J. E. J. Am. Chem. Soc. 1994, 116, 4623. (k) Schaverien, C. J.; Orpen, A. G. Organometallics 1994, 13, 69.
9. For example, see: (a) Edelmann, F. T. Angew. Chem., Int. Ed. Engl. 1995, 34, 2466. (b) Evans, W. J. New J. Chem. 1995, 19, 525. (c) Reger, D. L.; Lindeman, J. A.; Lebioda, L. Inorg. Chem. 1988, 27, 1890. (d) Oki, A. R.; Zhang, H.; Hosmane, N. S. Organometallics 1991, 10, 2964. (e) Recknagel, A.; Steiner, A.; Noltemeyer, M.; Brooker, S.; Stalke, D.; Edelmann, F. T. J. Organomet. Chem. 1991, 414, 327. (f) Schaverien, C. J.; Orpen, A. G. Inorg. Chem. 1991, 30, 4968. (g) Schaverien, C. J.; Meijboom, N.; Orpen, A. G. J. Chem. Soc., Chem. Commun. 1992, 124. (h) Bazan, G. C.; Schaefer, W. P.; Bercaw, J. E. Organometallics 1993. 12, 2126. (i) Karsch, H. H.; Ferazin, G.; Kooijman, H.; Steigelmann, O.; Schier, A.; Bissinger, P.; Hiller, W. J. Organomet. Chem. 1994, 482, 151. (j) Shapiro, P. J.; Cotter, W. D.; Schaefer, W. P.; Labinger, J. A.; Bercaw, J. E. J. Am. Chem. Soc. 1994, 116, 4623. (k) Schaverien, C. J.; Orpen, A. G. Organometallics 1994, 13, 69.
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11. For example, see: (a) Edelmann, F. T. Angew. Chem., Int. Ed. Engl. 1995, 34, 2466. (b) Evans, W. J. New J. Chem. 1995, 19, 525. (c) Reger, D. L.; Lindeman, J. A.; Lebioda, L. Inorg. Chem. 1988, 27, 1890. (d) Oki, A. R.; Zhang, H.; Hosmane, N. S. Organometallics 1991, 10, 2964. (e) Recknagel, A.; Steiner, A.; Noltemeyer, M.; Brooker, S.; Stalke, D.; Edelmann, F. T. J. Organomet. Chem. 1991, 414, 327. (f) Schaverien, C. J.; Orpen, A. G. Inorg. Chem. 1991, 30, 4968. (g) Schaverien, C. J.; Meijboom, N.; Orpen, A. G. J. Chem. Soc., Chem. Commun. 1992, 124. (h) Bazan, G. C.; Schaefer, W. P.; Bercaw, J. E. Organometallics 1993. 12, 2126. (i) Karsch, H. H.; Ferazin, G.; Kooijman, H.; Steigelmann, O.; Schier, A.; Bissinger, P.; Hiller, W. J. Organomet. Chem. 1994, 482, 151. (j) Shapiro, P. J.; Cotter, W. D.; Schaefer, W. P.; Labinger, J. A.; Bercaw, J. E. J. Am. Chem. Soc. 1994, 116, 4623. (k) Schaverien, C. J.; Orpen, A. G. Organometallics 1994, 13, 69.
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47. 2 was proven with NMR, see ref 4.
48. 4), was obtained.
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50. 3) present (15%) after 21 h at 65 °C is formed by thermolysis or by hydrogenolysis.
51. Berno, P.; Gambarotta, S. J. Chem. Soc., Chem. Commun. 1994, 2419.
52. Partial protolysis of the alkoxysilylamido was also observed and indicates that this reaction still competes with the protolysis of the pyridyl fragment. With 3 equiv of PhC≡CH, complete protolysis of both the pyridyl and alkoxysilylamido ligands was observed.
53. The solubility of 9 was sufficiently low to allow recrystallization and isolation from n-pentane. Unfortunately, crystals of 9 readily lost n-pentane from the crystal lattice. While stable enough to obtain a low-temperature X-ray structure determination (vide infra), the n-pentane had to be removed to obtain a satisfactory elemental analysis.
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