No abstract

The crystal structure of trans-[Rh(CO) (PPh,),(OCIO,)] has been determined, and it has been established that the perchlorate group is easily displaced by substituted hydrazines to give trans-[Rh(CO) (PPh,),L] -CIO, ( L = NH,NH,Jx; x = 1 or 2; R = M e or Ph). X-Ray crystallography shows that for all these complexes the unsymmetrically substituted hydrazine co-ordinates to rhodium via the N H, group.

Rearrangement of 1,2-diphenylhydrazine occurs exclusively to o-semidine in the presence of a rhodium catalyst with o-semidine bonding to rhodium(i) as a bidentate ligand.

No abstract