Ruthenium(II) complexes of some simple classic amine ligands
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Add time:09/01/2019 Source:sciencedirect.com
Several new Ru(II) complexes of tris(2-aminoethyl)amine (Tren) and diethylenetriamine (Dien) have been prepared using Ru(PPh3)3Cl2 and [(CH3)4N]2[Ru(Phen)Cl4] (1) as starting materials. The reaction of Tren or Dien with Ru(PPh3)3Cl2 leads to the formation of either the [Ru(Tren)(PPh3)Cl]Cl (2) or the Ru(Dien)(PPh3)Cl2 (4) complex, of which the latter then reacts further with a heterocyclic diimine (N–N) ligand to yield [Ru(Dien)(PPh3)(N–N)]Cl2. Addition of Tren or Dien to solutions of the [(CH3)4N]2[Ru(Phen)Cl4] complex replaces the coordinated chlorides with the N-donor ligand, forming [Ru(Tren)Phen](ClO4)2 (3) and [Ru(Dien)(Phen)Cl]Cl (5) respectively. Redox chemistry shows single-electron Ru(II) → Ru(III) oxidations over a wide range of potentials.
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