Pentapotassium dicitrato(4-)manganate(III) pentahydrate
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The centrosymmetric crystal structure pentapotassium dicitrato(4-) manganate(III) pentahydrate, K-5[Mn(C6H4O7) (2)].5H(2)O, has two independent anions, both of which lie at inversion centers in the triclinic unit cell. The Mn atoms are O, O', O"-chelated by the citrate entity and the six O atoms surrounding each Mn atom constitute an octahedron. The K atoms interact with the anions and the water molecules, leading to the formation of a network structure that also features extensive hydrogen bonding.