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Rhenium complexes of P,P,P’,P’-tetrakis(o-hydroxyphenyl)diphosphinoethane

TitleRhenium complexes of P,P,P’,P’-tetrakis(o-hydroxyphenyl)diphosphinoethane
Publication TypeJournal Article
Year of Publication1996
AuthorsLuo, HY, Orvig, C
JournalCanadian Journal of Chemistry-Revue Canadienne De Chimie
Date PublishedMay
Type of ArticleArticle
ISBN Number0008-4042
KeywordsCHEMISTRY, COORDINATION, CRYSTAL, DIMER, ISOMERS, NITRIDO COMPLEXES, P, P’, P’-tetrakis(o-hydroxyphenyl)diphosphinoethane, rhenium, technetium

Preparation of the hydrochloride salt of a new potentially hexadentate ligand precursor P,P,P’,P’-tetrakis(o-hydroxyphenyl)diphosphinoethane dihydrochloride (abbreviated H4P2O4 . 2HCl) is described. From H4P2O4 . 2HCl, neutral [Re2O2Cl2(PPh(3))(2)(mu-P2O4)] and dianionic [Re2O2Br4(mu-P2O4)](2-) dinuclear rhenium(V) complexes were synthesized. The complexes have been characterized by elemental analysis, infrared spectroscopy, mass spectrometry, and (HP)-H-1-P-31{H-1} NMR spectra. P-31{H-1} NMR revealed that only one isomer, presumably the anti, was present for [Re2O2Cl2(PPh(3))(2)(mu-P2O4)], and that two isomers, both anti and syn isomers, were observed for [Re2O2Br4(mu-P2O4)](2-). The coligands (PPh, for the former, Br- for the latter) of both complexes underwent ligand exchange with pyridine.

URL<Go to ISI>://A1996UP79100012