Summary
Palladium halides react with 4H-pyran-4-one (P) and 2,6-dimethyl-4H-pyran-4-one (DMP) to yield [Pd-(DMP)2X2] (X=Cl or Br), [Pd(P)2Cl2] and [Pd(P)Br2]n complexes which have been characterized by i.r. and proton n.m.r. spectroscopy. the thermal behaviour of the 4-pyrone adducts is correlated with that ofN,N-dimethylformamide analogues, [Pd(DMF)2Cl2] and [Pd(DMF)Br2]n, the ligand coordinating ability following the order: DMP>P>DMF. On the basis of i.r. spectra, the [Pd(L)2Cl2] (L-DMP or P) adducts should have the usualtrans configuration, whereas in both [Pd(P)Br2]n and [Pd(DMP)2Br2] a polymeric arrangement through bromine bridges should be present. The properties of the [Zn(P)2Cl2] and [Pt(DMP)2Cl2] complexes are also discussed.
Similar content being viewed by others
References
G. Faraglia, F. Barbaro and S. Sitran,Transition Met. Chem.,15, 242 (1990).
G. Faraglia and S. Sitran,Inorg. Chim. Acta,176, 67 (1990) and refs. therein.
J. N. Macdonald, S. A. Mackay and J. K. Tyler,J. Chem. Soc., Faraday Trans.,77, 79 (1981).
J. Staunton,Compr. Org. Chem.,4, 659 (1979).
J. M. Gioria and B. P. Susz,Helv. Chim. Acta,54, 246 (1971) and refs. therein.
M. Goodgame and D. A. Jakubovic,Coord. Chem. Rev.,79, 97 (1987).
V. Cherchi, G. Faraglia, L. Sindellari, S. Sitran and V. Scarcia,Inorg. Chim. Acta,155, 267 (1989) and refs. therein.
G. Faraglia, Z. J. Guo and S. Sitran,Polyhedron,10, 351 (1991).
G. Faraglia, D. Fregona, Z. J. Guo and S. Sitran,Thermochim. Acta,191, 95 (1991).
G. Faraglia, L. Sindellari and S. Sitran,Thermochim. Acta,161, 63 (1990).
A. R. Katritzky and R. A. Jones,Spectrochim. Acta,17, 64 (1961).
P. Császár, A. Császár, Á. Somogyi, Z. Dinya, S. Holly, M. Gál and J. E. Boggs,Spectrochim. Acta,42A, 473 (1986).
G. Raudaschl, B. Lippert, J. D. Hoeschele, H. E. Howard-Lock, C. J. L. Lock and P. Pilon,Inorg. Chim. Acta,106, 141 (1985).
D. B. Powell and A. Woolins,Spectrochim. Acta,41A, 1023 (1985).
G. Faraglia, R. Graziani, Z. J. Guo, U. Casellato and S. Sitran,Inorg. Chim. Acta, in press (1992).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fregona, D., Guo, Z., Faraglia, G. et al. Palladium-dihalide complexes with carbonyl donors. Transition Met. Chem. 17, 242–246 (1992). https://doi.org/10.1007/BF02910847
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02910847