An unprecedented κ2N,H bonding mode for a hydridotris(pyrazolyl)borato ligand

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

François Malbosc, Philippe Kalck, Jean-Claude Daran and Michel Etienne


Abstract

An unprecedented κ2N,H bonding mode for a hydridotris(pyrazolyl)borato (TpMe2,4-Cl) ligand is observed in [Rh(CO)(PMePh2)2(TpMe2,4-Cl)]; the complex, which features two dangling pyrazole rings and a B–(µ-H)–Rh agostic bond, is highly fluxional in solution.


References

  1. (a) S. Trofimenko, Chem. Rev., 1993, 93, 943 CrossRef CAS; (b) in this paper we use the nomenclature proposed by Trofimenko,1a Tp′ referring to thegeneric ligand.
  2. Selected examples: (a) U. E. Bucher, A. Currao, R. Nesper, H. Ruegger, L. M. Venanzi and E. Younger, Inorg. Chem., 1995, 34, 66 CrossRef CAS; (b) R. G. Ball, C. K. Ghosh, J. K. Hoyano, A. D. McMaster and W. A. G. Graham, J. Chem. Soc., Chem. Commun., 1989, 341 RSC; (c) V. Chauby, C. Serra Le Berre, P. Kalck, J.-C. Daran and G. Commenges, Inorg. Chem., 1996, 35, 6354 CrossRef CAS.
  3. N. G. Connelly, D. J. H. Emslie, B. Metz, A. G. Orpen and M. J. Quayle, Chem. Commun., 1996, 2289 RSC.
  4. I. D. Burns, A. F. Hill, A. J. P. White, D. J. Williams and J. D. E. T. Wilton-Ely, Organometallics, 1998, 17, 1552 CrossRef CAS.
  5. Y. Takahashi, M. Akita, S. Hikichi and Y. Moro-oka, Organometallics, 1998, 17, 4884 CrossRef CAS.
  6. E. R. Humphrey, N. C. Harden, L. H. Rees, J. C. Jeffrey, J. A. McCleverty and M. D. Ward, J. Chem. Soc., Dalton Trans., 1998, 3353 RSC.
  7. F. Malbosc, unpublished work.
  8. (a) Rh–H 1.51(4)Å in [RhH(PPh3){trans-(PPh2CH2)2ZrCp2}], R. Choukroun, A. Iraqui, D. Gervais, J.-C. Daran and Y. Jeannin, Organometallics, 1987, 6, 1197 Search PubMed; (b) Rh–H 1.58(2)Å in [RhH-( PiPr3)3], T. Yoshida, D. L. Thorn, T. Okano, S. Otsuka and J. A. Ibers, J. Am. Chem. Soc., 1980, 102, 6451 Search PubMed.
  9. (a) G. Ujaque, A. C. Cooper, F. Maseras, O. Eisenstein and K. G. Caulton, J. Am. Chem. Soc., 1998, 120, 361 CrossRef CAS; (b) J. Jaffart, R. Mathieu, M. Etienne, J. E. McGrady, O. Eisenstein and F. Maseras, Chem. Commun., 1998, 2011 RSC.
  10. A. E. Corrochano, F. A. Jalon, A. Otero, M. M. Kubicki and P. Richard, Organometallics, 1997, 16, 145 CrossRef CAS.
  11. V. Rodrigez, J. Full, B. Donnadieu, S. Sabo-Etienne and B. Chaudret, New J. Chem., 1997, 21, 847 Search PubMed.
  12. (a) J. Jaffart, C. Nayral, R. Choukroun, R. Mathieu and M. Etienne, Eur. J. Inorg. Chem., 1998, 425 CrossRef CAS; (b) F. J. Lalor, T. J. Desmond, G. M. Cotter, C. A. Shanahan, G. Ferguson, M. Parvez and B. Ruhl, J. Chem. Soc., Dalton Trans., 1995, 1709 RSC.
Click here to see how this site uses Cookies. View our privacy policy here.