| 磷钼钨杂多酸还原态的电子自旋共振研究 |
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| 引用本文： | 戚海华,杨晓亘,颜其洁,傅献彩.磷钼钨杂多酸还原态的电子自旋共振研究[J].化学学报,1994,52(2):155-159. |
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| 作者姓名： | 戚海华 杨晓亘 颜其洁 傅献彩 |
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| 作者单位： | 南京大学化学系 |
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| 摘 要： | 合成了一个系列具有Keggin结构的磷钼钨杂多酸H~3PMo~1~2~-~nW~nO~4~0(n=0,3,6,9,11,12).用电子自旋共振(ESR)方法研究了这些杂多酸的还原性.结果表明,在还原态的杂多酸中,除了因失去桥氧产生的Mo^5^+信号A(其g~⊥^A=1.952, g~∥^A=1.852)外,钨取代后产生另一Mo^5^+信号B,其g~⊥^B=1.923,g~∥^B=1.877.该信号被认为是由于杂多酸中钼的端氧还原所致. 由此提出钨的取代影响了杂多酸的氧化还原性,即桥氧的稳定性相对增强,端氧的稳定性相对减弱
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| 关 键 词： | 磷酸P 氧化还原反应 杂多酸 电子自旋共振谱法 钨酸P 钼酸 笼形化合物 KEGGIN |
ESR studies on reduction of molyblotunstophosphoric acid |
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| QI HAIHUA,YANG XIAOGEN,YAN QIJIE,FU XIANCAI.ESR studies on reduction of molyblotunstophosphoric acid[J].Acta Chimica Sinica,1994,52(2):155-159. |
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| Authors: | QI HAIHUA YANG XIAOGEN YAN QIJIE FU XIANCAI |
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| Abstract: | Reduction of a series of known heteropoly acids with Keggin unit, H3PMo12-n WnO40(n = 0, 3, 6, 9, 11, 12) was studied by ESR. Reduction of these acids in hydrogen was investigated by ESR, and two signals were observed Substitution of Mo by W in the Keggin anion is suggested to affect the reduction mechanism. |
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| Keywords: | PHOSPHORIC ACID P OXIDATION REDUCTION REACTION HETEROPOLYACID ELECTRON SPIN RESONANCE SPECTROMETRY TUNGSTIC ACID P MOLYBDIC ACID |
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