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The crystal structure of the new indium phosphate In3P2O8 has been determined from single-crystal data. The unit cell is cubic [space group I
3d (Z = 8)] with a = 11.152 (1) Å. The structure is characterized by a three-dimensional arrangement of isolated PO43- tetrahedra forming the anionic network, while the electroneutrality is insured by (In-In)4+ cationic pairs. The In-In distance, equal to 2.630 (1) Å, is the shortest In-In bond ever found. Powdered In3P2O8 can be synthesized from a mixture of 4 InPO4:1 In2O3 after thermal reduction under H2.
3d (Z = 8)] with a = 11.152 (1) Å. The structure is characterized by a three-dimensional arrangement of isolated PO43- tetrahedra forming the anionic network, while the electroneutrality is insured by (In-In)4+ cationic pairs. The In-In distance, equal to 2.630 (1) Å, is the shortest In-In bond ever found. Powdered In3P2O8 can be synthesized from a mixture of 4 InPO4:1 In2O3 after thermal reduction under H2.
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