View PDF Version
 
DOI: 10.1039/A803297A (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 2493-2496

Synthesis and structural characterisation of the dianion [Co9(C2)(CO)19]2– as its tetramethylammonium salt

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

Secondo Martinengo, Luciana Noziglia, Alessandro Fumagalli, Vincenzo G. Albano, Dario Braga and Fabrizia Grepioni

Abstract

The dianion [Co9(C2)(CO)19]2– 1 ([NMe4]+ salt) has been obtained by pyrolysis of [NMe4][Co6C(CO)14] in diglyme (2,5,8-trioxanonane) at 130 °C, and, as the parent compound, is paramagnetic. The salt [NMe4]2[Co9(C2)(CO)19] has been characterised by single crystal X-ray diffraction. The Co9(C2) core of the anion can be described as a D3h tricapped trigonal prism of Co atoms with stretched interbasal edges encapsulating an acetylide C2 unit [C–C 1.39(2) Å]. Nine CO ligands are linearly bonded, one per metal atom, six are edge bridging and four semibridging. The overall molecular symmetry is C2v or, more accurately, C2.

References

  1. V. G. Albano, M. Sansoni, P. Chini and S. Martinengo, J. Chem. Soc., Dalton Trans., 1973, 651 RSC.
  2. V. G. Albano, D. Braga, G. Ciani and S. Martinengo, J. Organomet. Chem., 1981, 213, 293 CrossRef CAS.
  3. V. G. Albano, D. Braga, P. Chini, G. Ciani and S. Martinengo, J. Chem. Soc., Dalton Trans., 1982, 645 RSC.
  4. V. G. Albano, D. Braga, A. Fumagalli and S. Martinengo, J. Chem. Soc., Dalton Trans., 1985, 1137 RSC.
  5. V. G. Albano, P. Chini, S. Martinengo, M. Sansoni and D. Strumolo, J. Chem. Soc., Chem. Commun., 1974, 299 RSC.
  6. S. Martinengo, D. Strumolo, P. Chini, V. G. Albano and D. Braga, J. Chem. Soc., Dalton Trans., 1985, 35 RSC.
  7. V. G. Albano, P. Chini, G. Ciani, M. Sansoni and S. Martinengo, J. Chem. Soc., Dalton Trans., 1980, 163 RSC.
  8. V. G. Albano, P. Chini, G. Ciani, M. Sansoni, D. Strumolo, B. T. Heaton and S. Martinengo, J. Am. Chem. Soc., 1976, 98, 5027 CrossRef CAS.
  9. G. Bor, L. Markó and B. Markó, Chem. Ber., 1962, 95, 333 CAS.
  10. M. D. Brice and B. R. Penfold, Inorg. Chem., 1972, 11, 1381 CrossRef CAS.
  11. A. Ceriotti, G. Longoni, M. Manassero, N. Masciocchi, G. Piro, L. Resconi and M. Sansoni, J. Chem. Soc., Chem. Commun., 1985, 1402 RSC.
  12. A. Ceriotti, G. Longoni, M. Manassero, N. Masciocchi, L. Resconi and M. Sansoni, J. Chem. Soc., Chem. Commun., 1985, 181 RSC.
  13. A. Ceriotti, G. Piro, G. Longoni, M. Manassero, N. Masciocchi and M. Sansoni, New. J. Chem., 1988, 12, 501 Search PubMed.
  14. A. Arrigoni, A. Ceriotti, R. Della Pergola and G. Longoni, J. Organomet. Chem., 1985, 296, 243 CrossRef CAS.
  15. A. Ceriotti, R. Della Pergola, L. Garlaschelli, G. Longoni, M. Manassero, N. Masciocchi, M. Sansoni and P. Zanello, Gazz. Chim. Ital., 1992, 122, 365 CAS.
  16. V. G. Albano, P. Chini, S. Martinengo, M. Sansoni and D. Strumolo, J. Chem. Soc., Dalton Trans., 1978, 459 RSC.
  17. K. M. Mackay, B. K. Nicholson, W. T. Robinson and A. W. Sims, J. Chem. Soc., Chem. Commun., 1984, 1276 RSC.
  18. D. Strumolo, C. Seregni, S. Martinengo, V. G. Albano and D. Braga, J. Organomet. Chem., 1983, 252, C93 CrossRef CAS.
  19. G. M. Sheldrick, SHELX 76, System of Computer Programs, University of Cambridge, 1976.
  20. E. Keller, SCHAKAL 92, University of Freiburg, Freiburg, 1992.
Click here to see how this site uses Cookies. View our privacy policy here.