Alkaline metal oxoantimonates(III), A3[SbO3] (A = K or Cs)

Area of Science:

• Inorganic Chemistry
• Solid-State Chemistry
• Crystallography

Background:

• Antimonates(III) are compounds containing antimony in the +3 oxidation state.
• Understanding the structural properties of alkali metal antimonates is crucial for materials science.

Purpose of the Study:

• To elucidate the crystal structures of tripotassium trioxoantimonate(III) and tricaesium trioxoantimonate(III).
• To characterize the coordination environment and bonding of the trioxoantimonate(III) anion.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structures.
• Analysis of crystallographic data included space group determination, bond length, and bond angle calculations.

Main Results:

• Both K(3)[SbO(3)] and Cs(3)[SbO(3)] crystallize in the cubic Na(3)[AsS(3)] structure type, space group P2(1)3.
• Discrete psi-tetrahedral [SbO(3)](3-) anions with C(3v) symmetry were observed.
• Specific Sb-O bond distances and O-Sb-O bond angles were precisely determined for both compounds.

Conclusions:

• The crystal structures confirm the presence of isolated [SbO(3)](3-) anions in these alkali metal antimonates(III).
• The determined structural parameters provide fundamental data for understanding antimonate chemistry and related materials.