A Cationic Antimonite
Chain Templated by Sulfate:
[Sb<sub>6</sub>O<sub>7</sub><sup>4+</sup>][(SO<sub>4</sub><sup>2–</sup>)<sub>2</sub>]
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Abstract
An extended metal oxide possessing a cationic charge
on the host
has been synthesized by hydrothermal methods. The structure consists
of 1D antimony oxide [Sb<sub>6</sub>O<sub>7</sub>]<sup>4+</sup> chains
with a new structural motif of four Sb atoms wide and unprotonated
sulfate anions between the chains. The material was characterized
by powder and single-crystal X-ray diffraction. Thermal behavior and
chemical resistance in aqueous acidic conditions (pH ∼2) indicate
a highly stable cationic material. The stability is attributed to
the entirely inorganic composition of the structure, where 1D covalently
extended chains are electrostatically bound to divalent anions
