Solute structuring in aqueous [Cr(H2O)6]Cl3
- 15 October 1976
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 65 (8) , 3134-3138
- https://doi.org/10.1063/1.433527
Abstract
A [Cr(H2O)6]Cl3 aqueous solution ∼1M at T=18 °C is investigated by x‐ray diffraction. The experimental correlation function shows three main peaks, centered at about 2.00, 2.85, and 3.25 Å, which are ascribed, respectively, to Cr3+–H2O, H2O–H2O, and Cl−–H2O nearest neighbor interactions. A simple model describing the coordination around the ions only in terms of nearest neighbor interactions is shown to be inconsistent with experimental data. A satisfactory agreement with experiments is reached with a model in which the hydrated [Cr(H2O)6]3+ ions are considered as interacting with a second shell of water molecules. This fact demonstrates that in the experimental conditions the Cr3+ ions hexa‐aquo must be considered as real kinetic units.Keywords
This publication has 35 references indexed in Scilit:
- The coordination of Cu(II) in a nearly saturated solution of CuCl2 in hydrochloric acidJournal of Inorganic and Nuclear Chemistry, 1974
- An X-Ray Diffraction Study of the Structure of Hydrated Copper(II) Ion in a Copper(II) Perchlorate SolutionBulletin of the Chemical Society of Japan, 1974
- X-Ray Diffraction Studies of Aqueous Solutions of Cadmium Perchlorate and Sodium TetraiodocadmateBulletin of the Chemical Society of Japan, 1974
- An X-Ray Investigation of the Structures of the Tetrachloro- and Tetrabromoaurate(III) Ions in Aqueous SolutionBulletin of the Chemical Society of Japan, 1974
- Solute species and equilibria in concentrated zinc chloride/hydrochloric acid solutionsJournal of Inorganic and Nuclear Chemistry, 1973
- Solute structuring in aqueous copper(II) chloride solutionsJournal of the American Chemical Society, 1973
- On the existence of pseudo-tetrahedral tetrachlorozincate(II) in hydrochloric acid solutionsJournal of Inorganic and Nuclear Chemistry, 1973
- The hydration of divalent cations in aqueous solution. An X-ray investigation with isomorphous replacementJournal of Applied Crystallography, 1970
- Solute-solvent interactions in some concentrated cobalt(II) bromide solutionsInorganic Chemistry, 1970
- X-Ray Diffraction Study of Some Concentrated Cobalt(II) Chloride SolutionsThe Journal of Chemical Physics, 1969