| 磷酸三甲(丁)酯质子化的^3^1P和1HNMR研究 |
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| 引用本文： | 杜有如,彭浩波,袁汉珍,陈丽敏.磷酸三甲(丁)酯质子化的^3^1P和1HNMR研究[J].化学学报,1987,45(3):279-282. |
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| 作者姓名： | 杜有如 彭浩波 袁汉珍 陈丽敏 |
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| 作者单位： | 中国科学院武汉物理研究所 |
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| 摘 要： | 测量了与水无限混溶的磷酸三甲酯(TMP)质子化过程的^3^1P化学位移的变化,解析后得到H2O.TMP(H.M)和H2O.2TMP(H.2M)两配合物的平衡常数,用^1H NMR研究混合物中水的化学位移,找出了自由水^1H化学位移值与浓度的关系,并在TBP体系中进行验证.
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| 关 键 词： | 浓度 磷酸三丁酯 质子磁共振谱法 甲酯 化学位移 磷酸酯类 |
31P and 1H NMR study of the preotonation of trimethyl and tributyl phosphates |
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| DU YOURU,PENG HAOBO,YUAN HANZHEN,CHEN LIMIN.31P and 1H NMR study of the preotonation of trimethyl and tributyl phosphates[J].Acta Chimica Sinica,1987,45(3):279-282. |
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| Authors: | DU YOURU PENG HAOBO YUAN HANZHEN CHEN LIMIN |
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| Abstract: | A 31P and 1H NMR study was made of the protonation of Me3PO4 (TMP), infinitely miscible with water. The chem. shifts (2.95 and 2.65 ppm) and equilibrium constants 0.90/mol.dm-3 and 0.12/(mol.dm-3)2] of the 2 complexes (H2O.TMP and H2O.2TMP) were obtained from the 31P chem. shift variation with concentration The variation of the 1H chem. shift of water in the system was analyzed. When the 1H chem. shifts of the 2 complexes are 4.58 and 2.20 ppm, resp., the chem. shift of the free water in the system is related linearly to its concentration: dH2O = 2.71 + 0.54 ln H2O]eq. This formula also fits well in the case of the protonation of TBP when the chem. shifts and equilibrium constants of H2O.TBP and H2O.2TBP are 4.41 and 2.52 ppm, 3.0/mol.dm-3 and 2.25/(mol.dm-3)2, resp. |
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| Keywords: | CONCENTRATION PHOSPHORIC ACID TRIBUTYL ESTER PROTON MAGNETIC RESONANCE SPECTROMETRY METHYL ESTER CHEMICAL SHIFT PHOSPHORIC ACID ESTER |
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