Structure of dihydrogen phosphate ion aggregates by Raman-monitored serial dilution

被引：38

作者：

Shaver, JM ^{[1
]}

Christensen, KA ^{[1
]}

Pezzuti, JA ^{[1
]}

Morris, MD ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA

来源：

APPLIED SPECTROSCOPY | 1998年 / 52卷 / 02期

关键词：

dihydrogen phosphate; glycine; ion clustering; Raman spectroscopy; serial dilution; factor analysis;

D O I：

10.1366/0003702981943329

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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.

引用

页码：259 / 264

页数：6

共 22 条

[1] THE STRUCTURE OF AQUEOUS-SOLUTIONS OF SOME DIHYDROGEN ORTHO-PHOSPHATES BY LASER RAMAN-SPECTROSCOPY [J].