Abstract
Two isomers of the N,O-coordinated acetylpyrrolyl complex [Ru(PPh3)(2)(Co)(NC4H3C(O)CH3)H] {cis-NH (1) and trans-NH (2) have been prepared as models for catalytic intermediates in the Murai reaction. Complex 2 isomerises to I upon heating via a dissociative pathway (Delta H++ = 195 +/- 41 kJ mol(-1); Delta S++ = 232 +/- 62 J mol(-1) K-1); the mechanism of this process has been modeled using density functional calculations. Complex 2 displays moderate catalytic activity for the Murai coupling of 2'-methylacetophenone with trimethylvinylsilane, but 1 proved to be catalytically inactive under the same conditions.
Original language | English |
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Pages (from-to) | 815-820 |
Number of pages | 6 |
Journal | Inorganica Chimica Acta |
Volume | 359 |
Issue number | 3 |
DOIs | |
Publication status | Published - Feb 2006 |
Keywords
- Molecular structure (of isomeric ruthenium(II) N
- O-coordinated acetylpyrrolyl hydrido carbonyl bis(phosphine) complex related to Murai coupling catalysts)
- O-coordinated acetylpyrrolyl hydrido carbonyl bis(triphenylphosphine) complexes as models for catalytic intermediates in Murai coupling reaction)
- O-coordinated acetylpyrrolyl hydrido carbonyl bis(triphenylphosphine) complexes)
- crystal structure ruthenium acetylpyrrolyl hydride carbonyl phosphine isomer
- O-coordinated acetylpyrrolyl hydrido carbonyl bis(triphenylphosphine) complex isomers as models for catalytic intermediates in Murai coupling reaction)
- Transition state structure (in isomerization of ruthenium(II) N
- ruthenium acetylpyrrolyl hydride carbonyl phosphine complex prepn structure isomerization
- Isomerization (of ruthenium(II) N
- isomerization ruthenium acetylpyrrolyl hydride carbonyl phosphine complex thermodn
- Isomerization enthalpy (of isomeric ruthenium(II) N
- Activation entropy (for isomerization of isomeric ruthenium(II) N
- Crystal structure
- Murai coupling catalyst intermediate ruthenium acetylpyrrolyl hydride carbonyl phosphine
- Coupling reaction catalysts (Murai
- prepn. of ruthenium(II) N