The first class of square-planar platinum(II) complexes containing electron-poor alkenes. Rare insertion of an alkene into a Pt-alkyl bond

Organometallics

Volumn 17, Issue 12, 1998, Pages 2646-2650

  Ganis, Paolo ^a   Orabona, Ida ^a   Ruffo, Francesco ^a   Vitagliano, Aldo ^a  

^a UNIVERSITY OF NAPLES FEDERICO II   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000889019     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om9800750     Document Type: Article

References (20)

1. (a) Johnson, L. K.; Killian, C. M.; Brookhart, M. J. Am. Chem. Soc. 1995, 117, 6414.
2. (b) Johnson, L. K.; Mecking, S.; Brookhart, M. J. Am. Chem. Soc. 1996, 118, 267.
3. (c) Mecking, S.; Johnson, L. K.; Wang, L.; Brookhart, M. J. Am. Chem. Soc. 1998, 120, 888.
4. Fusto, M.; Giordano, F.; Orabona, I.; Panunzi, A.; Ruffo, F. Organometallics 1997, 16, 5981.
5. (a) Paiaro, G.; Panunzi, A. J. Am. Chem. Soc. 1966, 88, 4843.
6. (b) Meester, A. M.; van Dam, H.; Stufkens, D. J.; Oskam, A. Inorg. Chim. Acta 1976, 20, 155.
7. (c) Scott, J. D.; Puddephatt, R. J. Organometallics 1986, 5, 1253.
8. (d) Orabona, I.; Panunzi, A.; Ruffo, F. J. Organomet. Chem. 1996, 525, 295-298.
9. 2=CHCOR ligand.
10. 1b,c only one pattern of NMR signals was detected in the range of temperature 203-298 K in the spectrum of the analogue Pt(II) complex 3a(OMe).
11. Cooper, D. G.; Powell, J. Inorg. Chem. 1976, 15, 1959.
12. Albano, V. G.; Natile, G.; Panunzi, A. Coord. Chem. Rev. 1994, 133, 67.
13. 7
14. Giordano, F. Private communication.
15. 1b,c
16. Coordination of the carbonyl group to Pt generally causes a lowering of its stretching frequency, see, for example: De Felice, V.; De Renzi, A.; Ruffo, F.; Tesauro, D. Inorg. Chim. Acta 1994, 219, 169 and references therein. In the case of 5b(OMe), the band was shifted in the region pertaining to the aromatic C-C stretchings and, hence, its frequency could not be accurately determined.
17. Actually, insertion of an electron-rich alkene into a Pt-C bond has been described for an alkene hanging from a σ-bonded alkvl chain, see: Flood, T. C.; Bitler, S. P. J. Am. Chem. Soc. 1984, 106, 6076.
18. On the other hand, insertion of electron-rich olefins into Ptaryl bonds is a well-known process, see, for example: De Felice, V.; De Renzi, A.; Tesauro, D.; Vitagliano, A. Organometallics 1992, 11, 3669.
19. Strömberg, S.; Svensson, M.; Zetterberg, K. Organometallics 1997, 16, 3165.
20. Clark, H. C.; Puddephatt, R. J. Inorg. Chem. 1970, 9, 2670.