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Isotypic lithium dicobalt triphosphate, LiCo2P3O10, and lithium dinickel triphosphate, LiNi2P3O10, have been synthesized and characterized by single-crystal X-ray diffraction. These are the first observations of non-hydrated mixed-metal tripolyphosphates. P3O5-10 groups are situated on a mirror plane, with successive PO3 moieties displaying both staggered and eclipsed conformations. Octahedrally coordinated Co2+ and Ni2+ ions form a staggered chain [Co...Co 3.286 (1) and 3.133 (1) Å, Ni...Ni 3.201 (1) and 3.023 (1) Å], with successive metal ions bridged by two O atoms.

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Crystallographic Information File (CIF)
Contains datablocks global, 1, 2

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