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Keywords:

  • chelates;
  • dihydrogen complexes;
  • hydrides;
  • phosphine ligands;
  • ruthenium

Abstract

The synthesis and characterisation of nonclassical ruthenium hydride complexes containing bidentate PP and tridentate PCP and PNP pincer-type ligands are described. The mononuclear and dinuclear ruthenium complexes presented have been synthesised in moderate to high yields by the direct hydrogenation route (one-pot synthesis) or in a two-step procedure. In both cases [Ru(cod)(metallyl)2] served as a readily available precursor. The influences of the coordination geometry and the ligand framework on the structure, binding, and chemical properties of the M[BOND]H2 fragments were studied by X-ray crystal structure analysis, spectroscopic methods, and reactivity towards N2, D2, and deuterated solvents.