Structure of Dihydrogen Phosphate Ion Aggregates by Raman-Monitored Serial Dilution
Structure of Dihydrogen Phosphate Ion Aggregates by Raman-Monitored Serial Dilution
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通过拉曼监测连续稀释研究磷酸二氢离子聚集体的结构
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
M. Morris
中科院分区：
文献类型：
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作者：
J. Shaver;K. Christensen;Jerilyn A. Pezzuti;M. Morris
用拉曼光谱研究了高浓度(>；5M)溶液串联稀释过程中磷酸二氢离子的聚集。用因子分析从稀释到约0.1M的600-2000个光谱家族中恢复单体光谱和聚集光谱，得到了自由水合磷酸二氢离子及其二聚体、三聚体和四聚体的光谱。有一些证据表明存在更长的链状聚集体。通过对2.3M甘氨酸溶液的稀释，验证了该系列稀释方法的有效性。只恢复了单体和二聚体离子的光谱。对于已知的甘氨酸体系，能带位置和强度以及二聚化浓度的依赖关系与以前报道的值一致。
The aggregation of dihydrogen phosphate ion has been studied by Raman spectroscopy during serial dilution of highly concentrated (>5 M) solutions. Factor analysis has been used to recover monomer and aggregate spectra from families of 600–2000 spectra obtained during dilution to about 0.1 M. Spectra of the free aquated dihydrogen phosphate ion and its dimer, trimer, and tetramer have been obtained. There is some evidence for the existence of longer chain aggregates. The serial dilution procedure has been verified by dilution of 2.3 M glycine solution. Only spectra of monomer and dimer ions are recovered. For the well-understood glycine system, the band positions and intensities and the dimerization concentration-dependence are in agreement with previously reported values.