Hydrated metal ions in aqueous solution: How regular are their structures?

@article{Persson2010HydratedMI,
  title={Hydrated metal ions in aqueous solution: How regular are their structures?},
  author={Ingmar Persson},
  journal={Pure and Applied Chemistry},
  year={2010},
  volume={82},
  pages={1901 - 1917}
}
  • I. Persson
  • Published 2010
  • Chemistry
  • Pure and Applied Chemistry
The hydration reaction is defined as the transfer of an ion or neutral chemical species from the gaseous phase into water, Mn+(g) → Mn+(aq). In this process, water molecules bind to metal ions through ion-dipole bonds of mainly electrostatic character. The hydration reaction is always strongly exothermic with increasing heat of hydration with increasing charge density of the ion. The structures of the hydrated metal ions in aqueous solution display a variety of configurations depending on the… Expand

Figures and Tables from this paper

A Study of the Hydration of the Alkali Metal Ions in Aqueous Solution
TLDR
The hydration of the alkali metal ions in aqueous solution has been studied by large angle X-ray scattering (LAXS) and double difference infrared spectroscopy (DDIR) and it is shown that the sodium, potassium, rubidium and cesium ions all are weakly hydrated with only a single shell of water molecules. Expand
Solution-phase electronegativity scale: insight into the chemical behaviors of metal ions in solution.
By incorporating the solvent effect into the Born effective radius, we have proposed an electronegativity scale of metal ions in aqueous solution with the most common oxidation states and hydrationExpand
Unraveling the coordination geometry of copper(II) ions in aqueous solution through absorption intensity.
TLDR
A comparative spectroscopic study between hexaaquaD4h Cu(H2O)6 2+ in Cs2Cu(SO4)2·6H2 O salt, average CuO5 in glass and Cu 2+ ions in aqueous solution is undertaken. Expand
NMR investigation of the structure and single-particle dynamics of inorganic salt solutions in a protic ionic liquid
Abstract With the aim to analyze the microstructure of the polar nanoregions of mixtures of ionic liquids and inorganic salts and the single particle dynamics of metal cations in these densely ionicExpand
Speciation of copper(II) complexes in an ionic liquid based on choline chloride and in choline chloride/water mixtures.
TLDR
Cu(choline)Cl(3) is the first example of a choline cation coordinating to a transition-metal ion, formed in an ionic liquid formed when choline chloride is mixed with copper(II) chloride dihydrate in a 1:2 molar ratio. Expand
The adsorption of arsenic oxyacids to iron oxyhydroxide columns
The fundamental side of this project includes determination of ionic radii and plausible hydration numbers for the weakly hydrated alkali metal ions in solution, as well as an investigation of theExpand
Quantum-chemical simulations of the hydration of Pb(II) ion: structure, hydration energies, and pKa1 value
TLDR
Thermodynamic and structural aspects of the hydration of Pb(II) ions were explored based on DFT calculations combined with the supermolecular/continuum solvent model and showed that because P b(H2O)n2+ complexes with six to nine water molecules have comparable thermodynamic stabilities, such complexes are likely to coexist in aqueous solutions. Expand
Solvation of Au+ versus Au0 in aqueous solution: electronic structure governs solvation shell patterns.
TLDR
Quite surprisingly, it is discovered that the first solvation shell of Au(0)(aq) consists of a single water molecule and features both "anionic" and "cationic" solvation patterns depending on fluctuation and polarization effects. Expand
On the Hydration of the Rare Earth Ions in Aqueous Solution
The totally symmetric stretching mode $$\nu_{1}$$ ν 1 Ln–(OH 2 ) of the first hydration shells of all the rare earth (RE) ions across the series from lanthanum to lutetium has been measured on diluteExpand
Axial structure of the Pd(II) aqua ion in solution.
TLDR
The present work characterizes the structure of the axial region of the Pd(II) aqua ion in solution using a combination of neutron and X-rays diffraction and extended X-ray absorption fine structure (EXAFS) spectroscopy, with empirical potential structure refinement (EPSR). Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 98 REFERENCES
The hydration of the scandium(III) ion in aqueous solution and crystalline hydrates studied by XAFS spectroscopy, large-angle X-ray scattering and crystallography.
TLDR
Comparisons with crystalline reference compounds containing hydrated scandium(III) ions in well characterized six-, seven- and eight-coordinated polyhedra have been used to evaluate the coordination numbers and configurations in aqueous solution. Expand
Aqueous PdII and PtII: anionic hydration revealed by Car-Parrinello simulations.
TLDR
Car–Parrinello molecular dynamics simulations of the Pd and Pt aqua ions in water are reported, thereby providing unusual insight into both dynamical and electronic structure phenomena occurring in the first and second solvation shells. Expand
Theoretical calculations on the structure of the hexahydrated divalent zinc, cadmium and mercury ions
SCF calculations have been performed on the title compounds in order to study the possible reasons for the anomalously large spread in the mean HgO bond distance previously obtained for hydrateExpand
Structure of the hydrated platinum(II) ion and the cis-diammineplatinum(II) complex in acidic aqueous solution: an EXAFS study.
Careful analysis of Pt L3-edge extended X-ray absorption fine structure (EXAFS) spectra shows that the hydrated platinum(II) ion in acidic (HClO 4) aqueous solution binds four water molecules withExpand
Structure and dynamics of the hydrated palladium(II) ion in aqueous solution A QMCF MD simulation and EXAFS spectroscopic study
Abstract The pharmacologically and industrially important palladium(II) ion is usually characterised as square-planar structure in aqueous solution, similar to the platinum(II) ion. OurExpand
The curium aqua ion.
TLDR
The coordination environment of the hydrated Cm3+ ion is probed both in the solid state and in solution, and the increase in splitting of the Cm-water distances in the first coordination sphere is discussed in terms of its potential relevance to the previously observed decrease in coordinating waters with decreasing ionic radius about the f-ion in solution. Expand
Hydration of copper(II): new insights from density functional theory and the COSMO solvation model.
TLDR
This article uses density functional theory and the COSMO continuum solvent model to characterize the structure and stability of [Cu(H2O)n](2+) clusters as a function of coordination number and cluster size and finds that the most thermodynamically favored Cu(II) complexes in the gas phase have a very open four-coordinate structure. Expand
Structure of the hydrated and dimethyl sulfoxide solvated rubidium ions in solution.
TLDR
The structure of the hydrated and the dimethyl sulfoxide solvated rubidium ions in solution has been determined by means of large-angle X-ray scattering (LAXS) and extendedX-ray absorption fine structure (EXAFS) studies by showing a significant asymmetry in the Rb-O bond distance distribution. Expand
On the solvation of the mercury(I) ion. A structural, vibration spectroscopic and quantum chemical study
Abstract The structure of the solvated mercury(I) ion in solvents such as water, methanol, dimethylsulfoxide, N,N′-dimethylpropyleneurea, acetonitrile and pyridine solution has been studied by meansExpand
Hydration of the Yttrium(III) Ion in Aqueous Solution. An X-ray Diffraction and XAFS Structural Study
The yttrium(III) ion is found by means of extended X-ray absorption fine-structure spectroscopy (EXAFS) and large angle X-ray scattering (LAXS) to be hydrated by eight water molecules in aqueousExpand
...
1
2
3
4
5
...