MATRIX PHOTOCHEMISTRY OF RU(CO)(2)(PME(3))(2)H-2 AND RU(CO)(3)(PME(3))(2) - FORMATION OF O)(2)(PME(3))(2)CENTER-DOT-CENTER-DOT-CENTER-DOT-S(S=AR, CH4, XE)

Citation
Rj. Mawby et al., MATRIX PHOTOCHEMISTRY OF RU(CO)(2)(PME(3))(2)H-2 AND RU(CO)(3)(PME(3))(2) - FORMATION OF O)(2)(PME(3))(2)CENTER-DOT-CENTER-DOT-CENTER-DOT-S(S=AR, CH4, XE), Organometallics, 14(7), 1995, pp. 3268-3274
Citations number
36
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
ISSN journal
02767333
Volume
14
Issue
7
Year of publication
1995
Pages
3268 - 3274
Database
ISI
SICI code
0276-7333(1995)14:7<3268:MPORAR>2.0.ZU;2-5
Abstract
The photochemical reactions of Ru(CO)(2)(PMe(3))(2)H-2 (I) and Ru(CO)( 3)(PMe(3))(2) (II) have been studied in low-temperature Ar, CH4, and X e matrices by IR and UV-visible spectroscopy. UV photolysis (lambda > 200 nm) of I and II results in the formation of Ru(CO)(2)(PMe(3))(2).. .S (S = matrix host), which shows a distinctive UV-visible absorption band with lambda(max) dependent on S (Ar, 423 nm; CH4, 385 nm; Xe, 352 nm). The reactions are partially reversed by irradiation with lambda > 360 nm. (CO)-C-13 isotopic labeling studies and trapping experiments in H-2-doped and N-2-doped Ar and CO matrices prove that the intermed iate is a dicarbonyl species. In the structure proposed for RU(CO)(2)( PMe(3))(2)...S, the C-Ru-C bond angle must exceed 130 degrees.