Potassium oxoaluminate ­antimonate(III), K2[Al2Sb2O7]

Dipotassium dialuminium diantimonate, K₂[Al₂Sb₂O₇], crystallizes in the trigonal space group . The structure is isotypic with K₂Pb₂Ge₂O₇ and consists of [Al₂Sb₂O₇]^2? layers containing Al³⁺ in a nearly regular tetrahedral and Sb³⁺ in a Ψ‐tetrahedral environment of O ligands.