无机化学学报

Dawson结构杂多阴离子¹⁸³W NMR谱的研究──“极位”W原子¹⁸³W NMR谱化学位移值的预测

¹⁸³W NMR STUDIES OF HETEROPOLYANION WITH DAWSON STRUCTURE──FORECAST OF δ(¹⁸³W NMR)VALUES OF "POLAR"W ATOM

作者	单位
龚剑	吉林医学院预防医学系, 吉林132001
瞿伦玉	东北师范大学化学系, 长春130024
张建国	中国科学院长春应用化学研究所, 长春130022

摘要: 本文研究了Dawson结构取代原子数与相应的¹⁸³WNMR谱中“极位'W原子的化学位移值间的关系,预测广α-1,2-[P₂W₁₆Nb₂O₆₂]^8-α-1-2,3-[P₂W₁₅MoNb₂O₆₂]^8-”极位“W原子¹⁸³WNMR谱化学位移们,结果α-1,2-[P₂W₁₆Nb₂O₆₂]^8-中与取代Nb相连”极位“W原子的化学位移值为-88ppm,与取代Nb书对称”极位“W原了的化学位移值为-144.7ppm,与取代Nb不对称”极位“W原子的化学位移值为-130.5ppm,α-1-2,3-[P₂W₁₅MoNb₂O₆₂]^8-中与取代Mo对称”极位“W原子的化学位移值为-134.7ppm,与取代Nb对称”极位“W原子的化学位移值为-145.6ppm.

关键词: Dawsou结构杂多阴离子 ¹⁸³WNMR谱化学位移

基金项目: 国家自然科学基金

Abstract: The relation between the numbers of substitution atoms and δ(¹⁸³W NMR)values of "polar" W atom were investigated. The values of chcmical shift or "polar" W atom in α-1,2-[P₂W₁₆Nb₂O₆₂]^8- and α-1-2,3-[P₂W₁₅MoNb₂O₆₂]^8- were forecasted. The results in α-1, 2-[P₂W₁₆ Nb₂O₆₂]^8- showed that the δ value of the W adjacent to Nb was -88ppm, the δvalue of the W "symmetry-related" to Nb was-144.7ppm, the δ value of the W" non-symmetry relatcd" to Nb was-130.5ppm. In α-1-2, 3-[P₂W₁₅MoNb₂O₆₂]^8-. It showed that δ value of W "symmetry-related" to Mo and Nb were -134.7ppm and -145.6ppm.

Keywords: polyoxoanion with Dawson structure ¹⁸³W NNR spectra chemical shift

投稿时间：1994-11-15

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龚剑,瞿伦玉,张建国.Dawson结构杂多阴离子¹⁸³W NMR谱的研究──“极位”W原子¹⁸³W NMR谱化学位移值的预测[J].无机化学学报,1995,11(4):355-360.

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