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|Section2= |Section3= |Section4= |Section5= |Section6= |Section7= |Section8= }} Niobium(V) ethoxide is an metalorganic compound with formula Nb2(OC2H5)10. It is a colorless solid that dissolves in some organic solvents but hydrolyzes readily.〔W. M. Haynes. CRC Handbook of Chemistry and Physics, 93rd Edition. Physical Constants of Inorganic Compounds.〕 It is mainly used for the sol-gel processing of materials containing niobium oxides.〔 ==Structure== Metal alkoxides rarely adopt monomeric structures, and niobium(V) ethoxide is no exception. Early studies established that niobium alkoxides aggregate in solution as dimers.〔D. C. Bradley and C. E. Holloway, "Nuclear Magnetic Resonance Studies on Niobium and Tantalum Penta-alkoxides" J. Chem. Soc. A, 1968, 219-223. 〕 Subsequent crystallographic analysis established that the methoxide and isopropoxides of niobium adopt bioctahedral structures.〔R. C. Mehrotra and A. Singh "Recent Trends in Metal Alkoxide Chemistry" Progress in Inorganic Chemistry, 1997, 46, p. 239ff. 〕 From a geometric perspective, the ten ethoxide ligand oxygen atoms of the Nb2(OEt)10 molecule in solution define a pair of octahedra sharing a common edge with the two niobium atoms located at their centres. From a bonding perspective, each niobium centre is surrounded octahedrally by four monodentate and two bridging ethoxide ligands. The oxygen atoms of the bridging ethoxides are each bonded to both niobium centres, and these two ligands are ''cis'' to one another within the coordination sphere. The formula ()2 more comprehensively represents this dimeric structure, though the simplified formula is commonly used for most purposes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Niobium(V) ethoxide」の詳細全文を読む スポンサード リンク
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