Chalkogenderivative des cyclopentadienyl-tricarbonyl-mangans und -rheniums, [(CO) 3MC 5H 4] 2E n (M = Mn, Re; E = S, Se, Te; n = 2, 1)

Abstract

The lithio derivatives of the half-sandwich complexes C 5H 5M(CO) 3 (M = Mn, Re) take up chalcogens E to give chalcogenolate intermediates of the type {(CO) 3MC 5H 4ELi} which, upon air oxidation, are transformed into the dichalcogenides [(CO) 3MC 5H 4] 2E 2 (E = S, Se, Te). Direct reaction of the lithio derivatives with SCl 2 gives the sulfides [(CO) 3MC 5H 4] 2S, whereas the corresponding reaction with SeCl 4 and TeCl 4, followed by reductive dehalogenation using aqueous Na 2S solution, gives the analogous selenides and tellurides, [(CO) 3MC 5H 4] 2E (M = Mn, Re; E = S, Se, Te). The phenylphosphino-substituted complexes [(CO) 3MC 5H 4] 2P(C 6H 5) (M = Mn, Re) are also described. All new compounds are characterized by their IR and mass spectra, and, in particular, by their 1H, 13C and 31P NMR spectra.