| Names | |
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| IUPAC name
potassium di-µ-oxidotetraoxidodimanganate(6−) | |
| Identifiers | |
3D model (JSmol) |
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PubChem CID |
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| Properties[1] | |
| K6Mn2O6 | |
| Molar mass | 440.46 g mol−1 |
| Appearance | Ruby-red crystals |
| Structure[1] | |
| P21/b (No. 14) | |
a = 889(5) pm, b = 677(5) pm, c = 1137(9) pm α = 90°, β = 90°, γ = 132.1° | |
| Distorted tetrahedral (Mn3+) | |
| Related compounds | |
Other anions |
Potassium hypomanganate Potassium manganate Potassium permanganate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Potassium dimanganate(III), K6Mn2O6, is a manganese(III) compound. Unlike lithium and sodium manganites, MMnO2, which are best described as mixed oxides, potassium dimanganite contains discrete Mn2O6−
6 anions in the solid state.[2] It rapidly hydrolyzes in air.[1]
K6Mn2O6 is prepared as ruby-red crystals by the reaction of excess potassium oxide with manganese(II) oxide in a sealed nickel bomb at 610 °C for ten days.[1] The Mn2O6−
6 anion has an Al2Cl6-type structure.[1][2]
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| Manganese(-I) |
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| Manganese(0) |
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| Manganese(I) |
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| Manganese(II) |
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| Manganese(II,III) |
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| Manganese(II,IV) |
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| Manganese(III) |
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| Manganese(IV) |
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| Manganese(V) |
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| Manganese(VI) |
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| Manganese(VII) |
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