SYNTHESIS, STRUCTURE AND REACTIVITY OF [REH2(NR)(CYTTP)](- ORGANOIMIDO ANALOGS OF THE OXO COMPLEX THAT TRANSFERS THE ELEMENTS OF WATER TO SUBSTRATES() (CYTTP=PHP(CH2CH2CH2PCY2)(2)) COMPLEXES )

The cationic organoimido-hydrido complexes [ReH2(NR)(Cyttp)](+) where R=NC6H4Me-p (2), Ph (3), Cy (4) and Cyttp=PhP(CH2CH2CH2PCy2)(2) were s ynthesized by reaction of [ReH2(O)(Cyttp)]O3SCF3 (1(Tf)) with the appr opriate primary amine. Use of molecular sieves promotes the formation of these rhenium products. 2-4 were shown by H-1 NMR spectroscopy to c ontain two inequivalent, cis hydride ligands. An X-ray diffraction stu dy of 2(PF6) revealed the presence of distorted mer-Cyttp and the orga noimido ligand cis to all three phosphorus atoms. The hydride ligands were not located. Unlike its oxo-hydrido analogue, 1(SbF6),2(Tf) faile d to react with CO or SO2 under comparable, or even more forcing, cond itions. However, with anhydrous HCl it afforded ReCl3(Cyttp), and with NaBH4, ReH5(Cyttp).