Rhenium complexes dioxane

Rhenium(VI) complexes, 4,194 alkoxides, 4,196 amides, 4,194 amines, 4,199 carboxylates, 4,199 dimethylformamide, 4,199 dioxane, 4,198 halides, 4,195,199 2-hydroxypyridine, 4,199 imides, 4,194 magnetic behavior, 1,271 mixed sulfur-nitrogen compounds, 4,196 N heterocycles, 4,199 nitrides, 4,194 oxide halides, 4, 195 oxoanions,4,196 pyridine, 4,199 sulfates, 4,198 sulfur compounds, 4,196 tellurates, 4,198... 

Rhenium(VI) complexes, 194 alkoxides, 196 amides, 194 amines, 199 carboxylates, 199 dimethylformamide, 199 dioxane, 198 halides, 195,199 2-hydroxypyridine, 199 imides, 194... 

The dry complex is transferred quickly to a crucible which is heated gently on a hot plate. The material is first melted to a colorless to blue-green liquid which decomposes to red rhenium(VI) oxide and volatile rhenium-free products as heating is continued. Reaction is complete in a few minutes. The product is chemically pure. The yield amounts to about 95 per cent of theory, some loss occurring because of the slight solubility of the complex in dioxane. 

Biswas and Rao [250] have prepared metallic Re03 nanocrystals of different sizes by the solvothermal decomposition of the rhenium(VII)oxide-dioxane complex, (Re207-(C4H802)a ), in toluene (see Fig.2.10). The diameter of the nanocrystals could be varied in the range of 8.5-32.5 nm by varying the decomposition conditions. The reaction of metal acetylacet-onates under solvothermal conditions produces nanocrystals of metal oxides... 

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