View PDF Version
 
DOI: 10.1039/A705206E (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 4301-4306

Synthesis and structural characterisation of monomeric Group 14 metal dialkyls MR2 [R = CPh(SiMe3)(C5H4N-2) or CH(SiMe3)(C9H6N-8); M = Ge, Sn or Pb]

(Note: The full text of this document is currently only available in the PDF Version )

Wing-Por Leung, Wai-Him Kwok, Lin-Hong Weng, Lawrence T. C. Law, Zhong Yuan Zhou and Thomas C. W. Mak

Abstract

A series of heavier main Group 14 metal dialkyls MR2 [R = R1 = CPh(SiMe3)(C5H4N-2), M = Ge 1 or Sn 2; R = R2 = CH(SiMe3)(C9H6N-8), M = Sn 3 or Pb 4] has been synthesized by the reaction of 2 equivalents of the appropriate lithium reagents LiR(tmen) (tmen = Me2NCH2CH2NMe2) with GeCl2(diox) (diox = 1,4-dioxane), SnCl2 or Pb[N(SiMe3)2]2 in diethyl ether solution. Crystal structure analysis has shown that compounds 1–4 are monomeric with the N-functionalized alkyl ligands R1 or R2 bonded to the metal centre in a C,N-chelate fashion and the geometry around the metal is pyramidal, consistent with a stereoactive lone pair at the metal.

References

  1. D. E. Goldberg, P. B. Hitchcock, M. F. Lappert, K. M. Thomas, A. J. Thorne, T. Fjeldberg, A. Haaland and E. R. Schelling, J. Chem. Soc., Dalton Trans., 1986, 2387 RSC.
  2. P. J. Davidson, D. H. Harris and M. F. Lappert, J. Chem. Soc., Dalton Trans., 1976, 2268 RSC.
  3. P. B. Hitchcock, M. F. Lappert, S. J. Miles and A. J. Thorne, J. Chem. Soc., Chem. Commun., 1984, 480 RSC.
  4. T. Fjeldberg, T. Haaland, B. E. R. Schilling, M. F. Lappert and A. J. Thorne, J. Chem. Soc., Dalton Trans., 1986, 1551 RSC.
  5. P. Jutzi, A. Becker, H. G. Stammler and B. Neumann, Organometallics, 1991, 10, 1647 CrossRef CAS.
  6. G. Ossig, A. Meller, C. Brönneke, O. Müller, M. Schäfer and R. Herbst-Irmer, Organometallics, 1997, 16, 2116 CrossRef CAS.
  7. L. M. Engelhardt, B. S. Jolly, M. F. Lappert, C. L. Raston and A. H. White, J. Chem. Soc., Chem. Commun., 1988, 336 RSC.
  8. M. Kira, R. Yauchibara, R. Hirano, C. Kabuto and H. Sakurai, J. Am. Chem. Soc., 1991, 113, 7785 CrossRef CAS.
  9. K. W. Klinkhammer and W. Schwartz, Angew. Chem., Int. Ed. Engl., 1995, 34, 1334 CrossRef CAS.
  10. R. S. Simons, L. Pu, M. M. Olmstead and P. P. Power, Organometallics, 1997, 16, 1920 CrossRef CAS.
  11. L. Lange, B. Meyer and W.-W. du Mont, J. Organomet. Chem., 1987, 329, C17 CrossRef CAS; P. Jutzi, H. Schmidt, B. Neumann and H.-G. Stammler, Organometallics, 1996, 15, 741 CrossRef CAS.
  12. M. Weidenbruch, J. Schlaefke, A. Schäfer, K. Peters, H. G. von Schnering and H. Marsmann, Angew. Chem., Int. Ed. Engl., 1994, 33, 1846 CrossRef.
  13. H. Grützmacher, H. Pritzkow and F. T. Edelmann, Organometallics, 1991, 10, 23 CrossRef; H. Lay, H. Pritzkow and H. Grützmacher, J. Chem. Soc., Chem. Commun., 1992, 260 RSC.
  14. S. Brooker, J.-K. Buijink and F. T. Edelmann, Organometallics, 1991, 10, 25 CrossRef CAS.
  15. M. Kira, T. Iwamoto, T. Maruyama, C. Kabuto and H. Sakurai, Organometallics, 1996, 15, 3767 CrossRef CAS.
  16. J. T. Snow, S. Murakami, S. Masamune and D. J. Williams, Tetrahedron Lett., 1984, 25, 4191 CrossRef CAS.
  17. S. A. Batcheller, T. Tsumauraya, O. Tempkin, W. M. Davis and S. Massamune, J. Am. Chem. Soc., 1990, 112, 9394 CrossRef CAS.
  18. W.-P. Leung, H.-K. Lee, Z.-Y. Zhou and T. C. W. Mak, J. Organomet. Chem., 1993, 462, 7 CrossRef CAS; W.-P. Leung, H.-K. Lee, L.-H. Weng, Z.-Y. Zhou and T. C. W. Mak, Organometallics, 1996, 15, 1785 CrossRef CAS.
  19. W.-P. Leung, H.-K. Lee, L.-H. Weng, Z.-Y. Zhou and T. C. W. Mak, J. Chem. Soc., Dalton Trans., 1997, 779 RSC.
  20. W.-P. Leung, W.-H. Kwok, L. T. C. Law, Z.-Y. Zhou and T. C. W. Mak, Chem. Commun., 1996, 505 RSC.
  21. W.-P. Leung, W.-H. Kwok, F. Xue and T. C. W. Mak, J. Am. Chem. Soc., 1996, 119, 1145 CrossRef CAS.
  22. D. H. Harris and M. F. Lappert, J. Chem. Soc., Chem. Commun., 1974, 895 RSC.
  23. C. D. Schaeffer and J. J. Zuckermann, J. Am. Chem. Soc., 1974, 96, 7160 CrossRef CAS.
  24. B. S. Jolly, M. F. Lappert, L. M. Engelhardt, A. H. White and C. L. Raston, J. Chem. Soc., Dalton Trans., 1993, 2653 RSC.
  25. J. T. B. H. Jastrzebski, P. A. van der Schaaf, J. Boersma, G. van Koten, D. Heijdenrijk, K. Goubitz and D. J. A. de Ridder, J. Organomet. Chem., 1989, 367, 55 CrossRef CAS.
  26. J. T. B. H. Jastrzebski, P. A. van der Schaaf, J. Boersma, G. van Koten, M. C. Zoutberg and D. Heijdenrijk, Organometallics, 1989, 8, 1373 CrossRef CAS.
  27. W.-P. Leung, L.-H. Weng, R.-J. Wang and T. C. W. Mak, Organometallics, 1995, 14, 4832 CrossRef CAS.
  28. G. M. Sheldrick, Crystallographic Computing 3, eds. G. M. Sheldrick, C. Krieger and R. Goddard, Oxford University Press, New York, 1985, p. 175 Search PubMed.
  29. International Tables for X-Ray Crystallography, Kynoch Press, Birmingham, 1974 Search PubMed.
Click here to see how this site uses Cookies. View our privacy policy here.