Coordination of bidentate aniline derivatives to the fac-[Re(CO) 3] + core

• Published in: Polyhedron 2011-06, Vol.30 (10), p.1739-1745
• Main Authors: Gerber, T.I.A., Betz, R., Booysen, I.N., Potgieter, K.C., Mayer, P.
• Format: Article
• Language: English
• Subjects: Aniline derivatives; Bidentate ligands; Rhenium(I) tricarbonyl
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2011.04.019

The reaction of a series of bidentate ligands derived from aniline have been used as chelates for the fac-[Re(CO) 3] + core. With 2-mercaptophenol an usual disulfido bridged complex have been obtained. [Display omitted] ► A cationic rhenium(I) dimer with two sulfido bridges. ► ‘2+1’ Rhenium(I) complexes with the [Re(CO) 3] + core. ► Coordination preference of thioether sulfur over amino group by the [Re(CO) 3] + core. A series of rhenium(I) tricarbonyl complexes, containing bidentate derivatives of aniline, was synthesized and structurally characterized. With 1,2-diaminobenzene (Hpda) the ‘2+1’ complex salt fac-[Re(CO) 3(Hpda) 2]Br was isolated. The neutral complex [Re(CO) 3(Hapa)Br] was formed with 2-aminodiphenylamine (Hapa) as ligand. 2-Aminophenol (Hopa) also produced the neutral ‘2+1’ complex [Re(CO) 3(opa) 2(Hopa)], but with 2-mercaptophenol (Hspo) the bridged dimer [Re 2(CO) 7(spo) 2] was found. In the complex [Re(CO) 3(Htpn)Br] (Htpn = N′-{(2-methylthio)benzylidene}benzene-1,2-diamine) the potentially tridentate ligand Htpn is coordinated via the methylthio sulfur and imino nitrogen atoms only, with a free amino group.