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Die Synthese …︁…︁ von Glyoxalbis(amidiniumhydrazon)sulfat (in rot) wurde erstmals 1898 von dem Chemiker Johannes Thiele beschrieben. Jetzt analysieren R. Custelcean et al. in ihrer Zuschrift auf S. 10671 ff. die Kristallstruktur dieses Salzes, die sich durch ausgedehnte wasserstoffverbrückte Sulfat‐Wasser‐Cluster auszeichnet (rechts). Die kompetitive Kristallisation dieser Cluster kann zur Sulfat‐Abscheidung...
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...
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