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Back Cover: Aqueous Sulfate Separation by Sequestration of [(SO 4 ) 2 (H 2 O) 4 ] 4− Clusters within Highly Insoluble Imine‐Linked Bis‐Guanidinium Crystals (Chem. Eur. J. 6/2016)
Author(s) -
Custelcean Radu,
Williams Neil J.,
Seipp Charles A.,
Ivanov Alexander S.,
Bryantsev Vyacheslav S.
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201504886
Subject(s) - imine , aqueous solution , sulfate , chemistry , crystallization , salt (chemistry) , solubility , crystallography , molecule , ligand (biochemistry) , lamellar structure , organic chemistry , biochemistry , receptor , catalysis
Quantitative removal of sulfate from seawater was achieved by selective crystallization of the anion with a bis(guanidinium) ligand self‐assembled in situ through imine condensation of simple components. The resulting crystalline salt has an exceptionally low aqueous solubility, on a par with BaSO 4 . Single‐crystal X‐ray diffraction analysis revealed pairs of sulfate anions clustered together with four water molecules within the crystals. More information can be found in the Full Paper by R. Custelcean et al. on page 1997 ff.