Oxorhenium(V) complexes containing tridentate Schiff-base and monothiol coligands

摘要

The reaction of [n-(C4H9)(4)N][ReOBr4(OPPh3)] with the tridentate Schiff-base [HOC6H4C(H)NC6H4SH] allows for the isolation of [ReOBr{eta(3)-(OC6H4C(H)NC6H4S)}] (1). The reaction of [n-(C4H9)(4)N][ReOBr4(OPPh3)] with [HOC6H4C(H)NC6H4SH] and the appropriate benzenethiol (C6H4X-4-SH) where X = H, Br, Cl, F, and OCH3 in methanol-acetonitrile treated with triethylamine has led to the isolation of a series of rhenium complexes of the type [ReO{eta(3)-(OC6H4C(H)NC6H4S)} (eta(1)-C6H4X-4-S)] (X = H (2), Br (3), Cl (4), F (5), and OCH3 (6)). Likewise, under similar reaction conditions, the use of benzylmercaptan ligands of the type (C6H4X-4-CH2SH) where X = H, Cl, F, and OCH3 has led to the isolation of a series of rhenium complexes of the type [ReO{eta(3)-(OC6H4C(H)NC6H4S)} (eta(1)-C6H4X-4-CH2S)] (X = H (7), Cl (8), F (9), and OCH3 (10)). The incorporation of the appropriate amine functionality into the substituent R of the monodentate ligand allows for the isolation of a cationic oxorhenium(V) species, namely, [ReO{eta(3)-(OC6H4C(H)NC6H4S)} (eta(1)-C5H4NH-2-S)][Br] (11). (C) 2000 Elsevier Science S.A. All rights reserved. [References: 38]