288099-27-4Relevant academic research and scientific papers
Bidentate phosphinophenol ligand: Synthesis and characterization of oxo and phenylimido rhenium(V) complexes of 2-diisopropylphosphinophenol
Loiseau, Frédérique,Lucchese, Yolande,Dartiguenave, Michèle,Coulais, Yvon
, p. 1111 - 1116 (2000)
Six-coordinate, monosubstituted and disubstituted phosphinophenol complexes ReYX2 (PPh3) (P ~ O) and ReYX (P ~ O)2 (Y = O, NPh; X = Cl, Br, I) were obtained by reacting 2-diisopropylphosphinophenol (P ~ OH) with ReOX3(PPh3)2 and Re(NPh)X3(PPh3)2 in toluene. A mixture of the monosubstituted and disubstituted complexes ReYX2(PPh3) (P ~ O) and ReYX(P ~ O)2 was precipitated when the reactions were performed with a 2:1 ligand to metal ratio. Excess ligand (4 equiv.) was needed to obtain quantitatively the disubstituted complexes. 1H and 31P{1H} NMR show that all monosubstituted and disubstituted complexes exist as single isomers with a trans-P,P 'twisted' octahedral geometry, the site trans to the multiple bond being filled by the oxygen donor of one P ~ O ligand. The compounds were also characterized by microanalysis, IR and mass spectrometry. (C) 2000 Elsevier Science Ltd.
