The reaction of dithizone with the ReO3Â + core. Formation of a mixed double complex salt containing a coordinated phosphazenohydrazide

The reaction of trans-[ReOI2(OEt)(PPh3)2] with dithizone in ethanol led to the isolation of the complex salt [ReO(dz)2][ReO(HL)2] (1), which contains the ionic oxorhenium(V) complexes [ReO(dz)2]− and [ReO(HL)2]+. The new NS-donor ligand triphenylphosphazeno-N-phenylmethanethiohydrazide HL was formed by the replacement of the Ph-N group on the azoic side of dithizone by the substituted triphenylphosphine of the starting material.