Oxorhenium mixed-ligand complexes with the 2,6-dimercaptomethylpyridine ligand. Crystal structure of [2,6-dimercaptomethylpyridinato][p-methoxybenzenethiolato]oxorhenium(V)
作者:Berthold Nock、Hans-Jürgen Pietzsch、Francesco Tisato、Theodosia Maina、Peter Leibnitz、Hartmut Spies、E Chiotellis
DOI:10.1016/s0020-1693(00)00056-6
日期:2000.6
Two novel oxorhenium complexes containing the 2,6-dimercaptomethylpyridine ligand were synthesized and characterized by classical methods of analysis. The [2,6-dimercaptomethylpyridinato] [p-methoxybenzenethiolato]oxohenium complex ,1 was produced by simultaneous action of equimolar quantities of 2,6-dimercaptomethylpyridine and p-methoxybenzenethiol on the precursor [(n-C4H9)(4)N][ReOCl4] in EtOH. As revealed by spectroscopic data as well as X-ray structure analysis, complex 1 adopts a distorted square pyramidal geometry around the metal with the SNS/S donors forming the basal plane and the oxygen occupying the apex of the pyramid. When the same tridentate ligand reacts with [(n-C4H9)(4)N][ReOCl3(PO)] (PO = o-diphenylphosphinophenolato) as a precursor, complex 2a, [2,6-dimercaptomethylpyridinato][o-diphenylphosphinophenolato]-ox-orhenium, is obtained. The latter is a six-coordinate rhenium species to which the distorted octahedral geometry is assigned, according to the analytical findings. In this case, the SNS/P donors occupy the equatorial plane and the two oxygen atoms the apices of the distorted octahedron positioned trans to each other. (C) 2000 Elsevier Science S.A. All rights reserved.