无机化学学报

²⁹Si NMR谱对[SiW₁₁(CH₃SiOSiCH₃)O₃₉]^4-结构的验证

VERIFICATION OF STRUCTURE OF a-(TBA)₄[SiW₁₁(CH₃SiOSiCH₃)O₃₉] BY ²⁹Si NMR SPECTROMETRY

作者	单位
王金晞	南京大学配位化学研究所, 配位化学国家重点实验室, 南京 210008
陈荣三	南京大学配位化学研究所, 配位化学国家重点实验室, 南京 210008

摘要: Keggin结构杂多酸的有机衍生物[SiW₁₁(RSiOSiR)O₃₉]^4-(R=C₂H₅、C₆H₅、NC(CH₂)₃、C₃H₇)已有报道,根据其红外光谱中出现1040cm^-1(Si-O-Si的振动峰),Knoth提出了图1的结构。从中可以看出R

关键词: 杂多酸盐 ²⁹Si NMR

基金项目:

Abstract: a-(TBA)₄[SiW₁₁(CH₃SiOSiCH₃)O₃₉] and a-(TBA)₄[SiW₉Mo₂(CH₃SiOSiCH₃)O₃₉] have been determined by ²⁹Si NMR spectrometry. There are two peaks in the spectra. The peak of high-field which assigns to central silicon atom of the compound is singlet. The peaks of low-field which assign to addendum silicon atoms (CH₃SiOSiCH₃) are quartet. The integral area of peaks of low-field is two times larger than that of high-field. This result verifies the structure propsed by Knoth.

Keywords: heteropolyoxometalate ²⁹Si NMR

投稿时间：1992-04-21

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王金晞,陈荣三.²⁹Si NMR谱对[SiW₁₁(CH₃SiOSiCH₃)O₃₉]^4-结构的验证[J].无机化学学报,1992,8(4):439-440.

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