Isopolyoxometalates of Antimony: Arylstibonic Acids [H8(RSb)12O28] and Derived Dodecanuclear Polyoxostibonates [M2H10−x(RSb)12<

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• 作者：Brian K. Nicholson ; Christopher J. Clark ; Cody E. Wright ; Tania Groutso
• 刊名：Organometallics
• 出版年：2010
• 出版时间：December 13, 2010
• 年：2010
• 卷：29
• 期：23
• 页码：6518-6526
• 全文大小：979K
• 年卷期：v.29,no.23(December 13, 2010)
• ISSN：1520-6041

文摘

Electrospray ionization mass spectrometry shows arylstibonic acids, p-XC₆H₄SbO₃H₂ (X = methyl, nitro, or chloro), and 1-naphthylstibonic acid exist in MeCN as dodecanuclear aggregates [H₈(RSb)₁₂O₂₈]. With KOH or NaOH these form polyoxometalate ions [M₂H₈(RSb)₁₂O₃₀]²⁻ (M = K or Na) with a hexagonal antiprismatic array of the Sb atoms, as shown by X-ray crystallographic structures for three new examples. There is one firmly encapsulated 10-coordinate M⁺ ion within an inorganic 12-crown-6 moiety {Sb₆O₆} in the hexagonal channel and one six-coordinate M⁺.