Preparation and characterization of rhenium(I) complexes with thiosemicarbazone ligands derived from resorcinol

作者：Nunez Montenegro Ara; Carballo Rosa; Abram Ulrich; Vazquez Lopez Ezequiel M^*

来源：Polyhedron, 2013, 65: 221-228.

DOI：10.1016/j.poly.2013.08.038

• Rhenium
• Tricarbonyl complexes
• Resorcinol derivatives
• X-ray
• Thiosemicarbazone ligands

New neutral tricarbonylrhenium(I) complexes with bidentate thiosemicarbazone ligands derived from resorcinol have been prepared. Ligands were obtained by condensation reactions of 2,4-dihydroxybenzaldehyde (dhb) and 2,4-dihydroxyacetophenone (dha) with thiosemicarbazide derivatives. The metal complexes have been characterized by elemental analysis, mass spectrometry, spectroscopic methods (IR, H-1 NMR) and the crystal structures for eight of these compounds have been elucidated. The Re(I) metal centers are coordinated through the azomethine nitrogen and the sulfur atoms establishing five-membered chelate rings (kappa-S,N(3)). The deprotonation of the ligand HL6 and the labilization of the halogen produces the formation of the dimeric complex [Re-2(L-6)(2)(CO)(6)] by Re-S-Re bridges, where S is the thiolate sulfur atom from a kappa-S,N(3)-bidentate thiosemicarbazonate ligand.

• 出版日期2013-11-28