Metallorganische Lewis-Säuren: XXXVIII. Monomere und verbrückte Pentacarbonyl-diphosphan-rhenium-Komplexe und deren Reaktionen mit Nucleophilen

Pentacarbonyltetrafluoroboratorhenium, (OC)5ReFBF3, reacts with diphosphanes Ph2EXEPh2 (X = CH2, CH2CH2, NH; E = P, As) to give monomeric and bridged complexes [(OC)5ReEPh2XEPh2]+, [(OC)5ReEPh2XPh2ERe(CO)5]2+. The crystal structures of [(OC)5RePPh2NHPPh2]+ and [(OC)5RePPh2CH2PPh2CH2CH2PPh2Re(CO)5(CO)5]2+ have been determined by an X-ray diffraction study. In solution the tautomers [(OC)5RePPh2NHPPh2]+ and [(OC)5RePPh2NP(H)Ph2]+ have been detected by NMR spectroscopy.