Metal-mediated rearrangement of 1,2-diphenylhydrazine to ortho -semidine upon reaction with dichlorotris(triphenylphosphine)ruthenium(II).

Reaction between RuCl 2 (PPh 3 ) 3 and 1,2-diphenylhydrazine resulted in rearrangement and coordination of ortho -semidine. The product, RuCl 2 (PPh 3 ) 2 (κ 2 -NH 2 -1,2-C 6 H 4 -NHPh), was characterized spectroscopically and the molecular structure was conclusively determined using X-ray crystallography. Computational chemistry was employed to probe the energetics surrounding the rearrangement reaction and product.