Journal
DALTON TRANSACTIONS
Volume 44, Issue 38, Pages 16785-16790Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5dt02226f
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Funding
- DFG [LA 2830/3-1]
- NSFC [21450110063]
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A series of ruthenium(II) complexes with three novel PNX-type pincer ligands is reported, in which X denotes a heterocyclic donor group (PNX = Ph2PCH2CH2N(H)CH2-X, X = 2-pyridyl, 2-furanyl, 2-thiophenyl or 2-pyrrolyl). The reaction of [(Ph3P)(3)RuCl2] with one equivalent of ligand leads to the transdichloro complexes [(PNX)RuCl2(PPh3)] (1-4) for all ligands, whereas the complexation of [(Ph3P)(3)Ru(H)(Cl)(CO)] results in different types of complexes. The variation of the heterocyclic donor group is in line with different binding properties and a labilization of this group. Investigations on the catalytic activity of different types of ruthenium(II) complexes in hydrogenation and dehydrogenation reactions reveal that more labile bound heterocycle donors result in a decrease of catalytic productivity and activity.
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