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Issue 36, 2019
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Synthesis, characterization and catalytic activity of novel ruthenium complexes bearing NNN click based ligands

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Abstract

Novel air stable ruthenium(II) complexes bearing tridentate ligands bis((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine (L1), 1-(1-benzyl-1H-1,2,3-triazol-4-yl)-N-(pyridin-2-ylmethyl)methanamine (L2) or 2-(4-phenyl-1H-1,2,3-triazol-1-yl)-N-(pyridin-2-ylmethyl)ethan-1-amine (L3) were synthesised. The nitrogen based ligands were easily prepared by virtue of click chemistry using cheap and commercially available reagents. The ruthenium complexes were obtained by heating the Ru(PPh3)3Cl2 precursor and the tridentate NNN ligand in toluene under reflux for 2 hours, achieving yields of 82–87%. These complexes were fully characterized by means of NMR, FT-IR and high resolution ESI spectroscopy. The crystal structure of one of the complexes was determined. These complexes showed excellent activity and selectivity in the hydrogenation of ketones and aldehydes. DFT calculations show that complex 3 may react through an outer-sphere catalytic cycle rather than via an inner-sphere mechanism.

Graphical abstract: Synthesis, characterization and catalytic activity of novel ruthenium complexes bearing NNN click based ligands

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Publication details

The article was received on 30 Apr 2019, accepted on 12 Aug 2019 and first published on 23 Aug 2019


Article type: Paper
DOI: 10.1039/C9DT01822K
Dalton Trans., 2019,48, 13580-13588

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    Synthesis, characterization and catalytic activity of novel ruthenium complexes bearing NNN click based ligands

    R. Sole, M. Bortoluzzi, A. Spannenberg, S. Tin, V. Beghetto and J. G. de Vries, Dalton Trans., 2019, 48, 13580
    DOI: 10.1039/C9DT01822K

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