Abstract
The photochemistry of Ru(CO)3(dmpe) (II; dmpe = Me2PCH2CH2PMe2), has been studied by matrix isolation at 12 K and laser flash photolysis with UV - visible and IR detection at ambient temperature. UV photolysis in a matrix results in the formation of Ru(CO)2(dmpe)·S (S = matrix host), which shows two distinctive UV-visible bands with λmax dependent on S (Ar, 410, 600 nm; CH4, 357, 500 nm; Xe, 345, 457 nm). These shifts are the largest yet observed for any matrix-solvated species. The reactions are partially reversed by long-wavelength (λ > 420 nm) photolysis. Laser flash photolysis in heptane solution (λexe = 266 or 308 nm) with IR or UV - visible detection reveals that Ru(CO)2(dmpe)·heptane is a short-lived fragment which decays rapidly by reaction with Ru(CO)3(dmpe) (k2 ≈ 1 × 109 dm3 mol-1 s-1). Steady-state photolysis of II in heptane in the presence of hydrogen or triethylsilane yields Ru(CO)2(dmpe)H2 and Ru(CO)2(dmpe)(SiEt3)H, respectively, which have been characterized by IR and NMR spectroscopy.
Original language | English |
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Pages (from-to) | 268-274 |
Number of pages | 7 |
Journal | Organometallics |
Volume | 16 |
Issue number | 2 |
DOIs | |
Publication status | Published - 21 Jan 1997 |
Externally published | Yes |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry