Prepared from H2 Gas by Ligand Displacement or Reduction

Complexes Prepared from H2 Gas by Ligand Displacement or Reduction 

A related method of synthesis from H2 gas involves displacement of a labile ligand 

Neutral ligands L that have been displaced include H20,92,109 N2,41,162 NH3,163 CH2C12, 118and PMe2Ph.31 One of the simplest conceivable H2 complexes, 

Often a group 1 metal cation such as Na+ or alternatively Tl+ is present to precipitate with the anion. A Re complex has recently been found wherein H2 directly displaces a normally strongly bound chloride ligand without such help22  

The syntheses of polyhydride complexes containing r 2-H2, such as RuH2(H2)-(PPh3)3. can be accomplished by hydride reduction according to165 

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