Aqueous Sulfate Separation by Crystallization of Sulfate-Water Clusters

Radu Custelcean; Neil J. Williams; Charles A. Seipp

doi:10.1002/anie.201506314

Aqueous Sulfate Separation by Crystallization of Sulfate-Water Clusters

Radu Custelcean, Neil J. Williams, Charles A. Seipp

Chemical Separations Group

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

An effective approach to sulfate separation from aqueous solutions is based on the crystallization of extended [SO₄(H₂O)₅^2-]_n sulfate-water clusters with a bis(guanidinium) ligand. The ligand was generated in situ by hydrazone condensation in water, thereby bypassing the need for elaborate syntheses, tedious purifications, and organic solvents. Crystallization of sulfate-water clusters represents an alternative approach to the now established sulfate separation strategies that involve encapsulation of the "naked" anion. You can leave your water on: Extended [SO₄(H₂O)₅^2-]_n clusters crystallize from aqueous solutions with a bis(guanidinium) ligand generated in situ by hydrazone condensation. The crystallization of these clusters is a viable alternative to the established sulfate separation approach, which involves encapsulation of the "naked" anion.

Original language	English
Pages (from-to)	10525-10529
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	54
Issue number	36
DOIs	https://doi.org/10.1002/anie.201506314
State	Published - Sep 1 2015

Keywords

anions
cluster compounds
guanidines
hydrates
hydrazones

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abstract = "An effective approach to sulfate separation from aqueous solutions is based on the crystallization of extended [SO4(H2O)52-]n sulfate-water clusters with a bis(guanidinium) ligand. The ligand was generated in situ by hydrazone condensation in water, thereby bypassing the need for elaborate syntheses, tedious purifications, and organic solvents. Crystallization of sulfate-water clusters represents an alternative approach to the now established sulfate separation strategies that involve encapsulation of the {"}naked{"} anion. You can leave your water on: Extended [SO4(H2O)52-]n clusters crystallize from aqueous solutions with a bis(guanidinium) ligand generated in situ by hydrazone condensation. The crystallization of these clusters is a viable alternative to the established sulfate separation approach, which involves encapsulation of the {"}naked{"} anion.",

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KW - guanidines

KW - hydrates

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Aqueous Sulfate Separation by Crystallization of Sulfate-Water Clusters

Abstract

Keywords

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