Reaction of (p-halophenyl)stibonic acid with diphenylsilanediol (in ratio 1:1) in refluxing toluene far 6 h afforded colorless crystalline products in high Yields. Singlecrystal X-ray structural elucidation reveals the formation of the products [(p-Cl-C6H4Sb)(4)(O)(4)(Ph2SiO2)(4)] (1) and [(p-Br-C6H4Sb)(4)(O)(4)(Ph2SiO2)(4)] (2), respectively. The chesters 1 and 2 were isostructural; the core consists of a distorted Sb4O4 cubane framework with the siloxides acting as bridging ligands across the antimony atoms present at alternate corners of the cube.
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