View PDF Version
 
DOI: 10.1039/A707042J (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 697-702

Co-ordination of hydrazine and substituted hydrazines on reaction with [Rh2(CO)4Cl2] and disproportionation of 1,2-N2H2Ph2

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

James V. Barkley, Brian T. Heaton, Chacko Jacob, Rajeswary Mageswaran and Jeyagowry T. Sampanthar

Abstract

The progressive addition of hydrazine and the following increasingly substituted hydrazines L (N2H4 Ia, H2NNHMe Ib, H2NNHPh Ie, H2NNMe2 Id, or MeHNNHMe Ic) to [Rh2(CO)4Cl2] resulted in the initial formation of [{Rh(CO)2Cl}2(µ-L)] 1 followed by the formation of cis-[Rh(CO)2L(Cl)] 2; analogous mononuclear complexes were formed directly on addition of the more heavily substituted hydrazines Me2NNMe2 IIf and H2NNPh2 IIg, but addition of 1,2-N2H2Ph2 IIIh to [Rh2(CO)4Cl2] resulted in disproportionation of the hydrazine and formation of cis-[Rh(CO)2(NH2Ph)Cl] 3 and cis-[Rh(CO)2(PhN[double bond, length half m-dash]NPh)Cl] 4. The above complexes have been spectroscopically characterised by IR and 13C/15N NMR measurements. X-Ray structural analysis on [{Rh(CO)2Cl}2(µ-L)] (L = H2NNHMe or MeHNNHMe) confirmed that L adopts a µ-η1∶η1-mode of bonding with a cisoid arrangement of the Rh(CO)2Cl groups about the N–N bond.

References

  1. B. T. Heaton, C. Jacob and P. Page, Coord. Chem. Rev., 1996, 154, 193 CrossRef CAS.
  2. M. Hidai and Y. Mizobe, Chem. Rev., 1995, 95, 1115 CrossRef CAS.
  3. W. Heggie, P. R. Page, I. Villax, I. Ghatak and M. B. Hursthouse, Eur. Pat., 0 283 616, 1987.
  4. B. T. Heaton, C. Jacob, G. L. Monks, M. B. Hursthouse, I. Ghatak, R. G. Sommerville, W. Heggie, P. R. Page and I. Villax, J. Chem. Soc., Dalton Trans., 1996, 61 RSC and refs. therein.
  5. T. V. Ashworth, M. J. Nolte, R. H. Reimann and E. Singleton, J. Chem. Soc., Dalton Trans., 1978, 1043 RSC.
  6. M. B. Hursthouse, J. Newton, P. R. Page and I. Villax, Polyhedron, 1988, 7, 2087 CrossRef CAS.
  7. G. Barrado, D. Miguel, V. Riera and S. Garcia-Granda, J. Organomet. Chem., 1992, 489, 129 CrossRef CAS.
  8. J. A. Broomhead, J. R. Badge, J. H. Enemark, R. D. Feltham, J. I. Gelder and P. L. Johnson, Adv. Chem. Ser., 1977, 162, 421 Search PubMed.
  9. P. E. Mosier, C. G. Kim and D. Coucouvanis, Inorg. Chem., 1993, 32, 2620 CrossRef CAS.
  10. D. Sellmann, P. Kreutzer, G. Huttner and A. Frank, Z. Naturforsch., Teil B, 1978, 33, 1341 Search PubMed.
  11. L.-L. Nguyen, J. Kozelka and C. Bois, Inorg. Chim. Acta, 1991, 190, 217 CrossRef.
  12. J. Kozelka, E. Segal and C. Bois, unpublished work quoted in ref. 11.
  13. C. J. Davies, B. T. Heaton and C. Jacob, J. Chem. Soc., Chem. Commun., 1995, 1177 RSC.
  14. C. J. Davies, I. M. Dodd, M. M. Harding, B. T. Heaton, C. Jacob and J. Ratnam, J. Chem. Soc., Dalton Trans., 1994, 787 RSC.
  15. TEXSAN-TEXRAY, Structure Analysis Package, Molecular Structure Corporation, Houston, TX, 1985.
  16. D. T. Cromer and J. T. Waber, International Tables for X-Ray Crystallography, Kynoch Press, Birmingham, 1974, vol. 4, Table 2.2A Search PubMed.
  17. S. Motherwell and W. Clegg, PLUTO, Program for plotting molecular and crystal structures, University of Cambridge, 1978.
Click here to see how this site uses Cookies. View our privacy policy here.