Two photochemical pathways in competition: Matrix isolation, time- resolved and NMR studies of cis-[Ru(PMe3)4(H)2]

Chemical Communications

Volumn , Issue 13, 2000, Pages 1175-1176

  Montiel Palma, Virginia ^a   Perutz, Robin N ^a   George, Michael W ^b   Jina, Omar S ^b   Sabo Etienne, Sylviane ^c  

^a UNIVERSITY OF YORK   (United Kingdom)

^b UNIVERSITY OF NOTTINGHAM   (United Kingdom)

^c LCC LABORATOIRE DE CHIMIE DE COORDINATION   (France)

Author keywords

[No Author keywords available]

Indexed keywords

RUTHENIUM COMPLEX;

ARTICLE; CHEMICAL ANALYSIS; COMPLEX FORMATION; DISSOCIATION; NUCLEAR MAGNETIC RESONANCE; PHOTOCHEMISTRY; PHOTOLYSIS; SPECTRAL SENSITIVITY;

EID: 0034617187     PISSN: 13597345     EISSN: None     Source Type: Journal    
DOI: 10.1039/b002297g     Document Type: Article

References (24)

1. R. N. Perutz, Pure Appl. Chem., 1998, 70, 2211.
2. L. Cronin, M. C. Nicasio, R. N. Perutz, R. G. Peters, D. M. Roddick and M. K. Whittlesey, J. Am. Chem. Soc., 1995, 117, 10 047.
3. (a) D. H. Berry and L. J. Procopio, J. Am. Chem. Soc., 1991, 113, 8627;
4. (b) J. A. Reichl and D. H. Berry, Adv. Organomet. Chem., 1998, 43, 197.
5. M. J. Burn and R. G. Bergman, J. Organomet. Chem., 1994, 472, 43.
6. -1 is inconsistent with our measurements).
7. -1.
8. R. J. Mawby, R. N. Perutz and M. K. Whittlesey, Organometallics, 1995, 14, 3268.
9. 9
10. M. Ogasawara, F. Maseras, N. Gallego-Planas, K. Kawamura, K. Ito, K. Toyota, W. E. Streib, S. Komiya, O. Eisenstein and K. G. Caulton, Organometallics, 1997, 16, 1979.
11. PC 2.9 Hz).
12. Compound 1 was sublimed at 328 K and cocondensed with argon onto a window cooled to 20 K. The matrix was cooled to 12 K, see D. M. Haddleton, A. McCamley and R. N. Perutz, J. Am. Chem. Soc., 1988 110, 1810.
13. 2
14. -1 respectively. Errors in rate constants are quoted to 95% confidence limits.
15. 3 did not vary significantly with the wavelength of measurement.
16. 2 windows, 1 mm pathlength), see M. W. George, M. Poliakoff and J. J. Turner, Analyst, 1994, 119, 551.
17. -1 (rise time < 1 μs) which correspond to the multiple substitution product 7 even when using an open-flow system. They were confirmed to result from a single-photon process. This species may be derived from hot 2 (full details will be published elsewhere).
18. 31P} spectroscopy: 64.5 Hz.
19. 1H NMR spectra recorded after short photolysis times in the presence of 3 equiv. of silane. On more prolonged photolysis, the ratio of the yields approaches unity, as a result of thermal/photochemical interconversion of the products.
20. (a) D. H. Berry, personal communication; V. K. Dioumaev, K. Plössl, P. J. Carroll and D. H. Berry, J. Am. Chem. Soc., 1999, 121, 8391;
21. (a) D. H. Berry, personal communication; V. K. Dioumaev, K. Plössl, P. J. Carroll and D. H. Berry, J. Am. Chem. Soc., 1999, 121, 8391;
22. 3] under dihydrogen and heating to 80 °C. After 2 h the ratio of the products changed to 1:3.9 respectively.
23. J. W. Bruno, J. C. Huffman, M. A. Green, J. D. Zubkowski, W. E. Hatfield and K. G. Caulton, Organometallics, 1990, 9, 2556.
24. A. Arndtsen, R. G. Bergman, T. A. Mobley and T. H. Peterson, Acc. Chem. Res., 1995, 28, 154.