| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1334364 | Polyhedron | 2015 | 8 Pages |
The reaction of orotic acid (H2or) with trans-[ReOBr3(PPh3)2] in ethanol produced the triply-bridged dimer (μ-Br)(μ-O)(μ-or)[ReIV2Br(OEt)2(PPh3)2] (1). In 2-propanol as solvent the product (μ-Br)(μ-O)(μ-or)[ReIV2Br2(OPri)(PPh3)2] (2) was isolated. In order to eliminate the oxo group as a bridging ligand, the imido-coordinated [ReV{=NC6H4(2-NH2)}Br3(PPh3)2] was reacted with H2or to give the monomer [Re{NC6H4(NH2)}Br(or)(PPh3)2] (3) as product. To remove PPh3 as possible ligand, the reaction of [ReO2(py)4]Cl with H2or produced [ReO(OEt)(or)(py)2] (4). H2or was also reacted with [Re(CO)5Cl], yielding the product (Ph4P)[Re(CO)3(H2O)(or)] (5). The crystal structures of 1–5 were determined by X-ray single crystal diffraction. In addition, infra-red, 1H NMR, electrochemical and electronic properties are also reported.
Graphical abstractThe reaction of orotic acid (H2or) with trans-[ReOBr3(PPh3)2] in ethanol yielded the triply-bridged dimer (μ-Br)(μ-O)(μ-or)[ReIV2Br(OEt)2(PPh3)2] (1). In 2-propanol the product (μ-Br)(μ-O)(μ-or)[ReIV2Br2(OPri)(PPh3)2] (2) was isolated. In order to eliminate the oxo group as a bridging ligand, the imido-coordinated [ReV{=NC6H4(2-NH2)}Br3(PPh3)2] was reacted with H2or to give the monomer [Re{NC6H4(NH2)}Br(or)(PPh3)2] (3) as product. To remove PPh3 as possible ligand, the reaction of [ReO2(py)4]Cl with H2or produced [ReO(OEt)(or)(py)2] (4). H2or was also reacted with [Re(CO)5Cl], yielding the product (Ph4P)[Re(CO)3(H2O)(or)] (5).Figure optionsDownload full-size imageDownload as PowerPoint slide
