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A Strategy for the Preparation of Thioantimonates Based on the Concept of Weak Acids and Corresponding Strong Bases
Author(s) -
Anderer Carolin,
Delwa de Alarcón Natalie,
Näther Christian,
Bensch Wolfgang
Publication year - 2014
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.201404396
Subject(s) - hydrothermal circulation , antimony , crystallization , decomposition , base (topology) , chemistry , hydrothermal synthesis , metal , ion , crystallography , inorganic chemistry , materials science , chemical engineering , organic chemistry , mathematics , mathematical analysis , engineering
By following a new synthetic approach, which is based on the in situ formation of a basic medium by the reaction between the strong base Sb(V)S 4 3− and the weak acid H 2 O, it was possible to prepare three layered thioantimonate(III) compounds of composition [TM(2,2′‐bipyridine) 3 ][Sb 6 S 10 ] (TM=Ni, Fe) and [Ni(4,4′‐dimethyl‐2,2′‐bipyridine) 3 ][Sb 6 S 10 ] under hydrothermal conditions featuring two different thioantimonate(III) network topologies. The antimony source, Na 3 SbS 4 ⋅ 9 H 2 O, undergoes several decomposition reactions and produces the Sb III S 3 species, which condenses to generate the layered anion. The application of transition‐metal complexes avoids crystallization of dense phases. The reactions are very fast compared to conventional hydrothermal/solvothermal syntheses and are much less sensitive to changes of the reaction parameters.