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Percobaltates are chemical compounds where the oxidation state of cobalt is +5. This is the highest established oxidation state of cobalt. The simplest of these are bi-metallic Group 1 oxides such as sodium percobaltate (Na3CoO4); which may be produced by the reaction of cobalt(II,III) oxide and sodium oxide, using oxygen as the oxidant: 4 Co3O4 + 18 Na2O + 7 O2 → 12 Na3CoO4 A number of organometallic Co(V) complexes have also been reported.

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  • Percobaltate (en)
  • 高钴酸盐 (zh)
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  • 高钴酸盐可表示为M3CoO4，是钴元素目前发现的最高价化合物。在400 °C和100个大气压下加热四氧化三钴与氧化钠的混合物可以制得不纯的高钴酸钠（Na3CoO4）： 也可以用类似方法制备高钴酸钾（K3CoO4），磁性研究表明其中含有Co(V)。 (zh)
  • Percobaltates are chemical compounds where the oxidation state of cobalt is +5. This is the highest established oxidation state of cobalt. The simplest of these are bi-metallic Group 1 oxides such as sodium percobaltate (Na3CoO4); which may be produced by the reaction of cobalt(II,III) oxide and sodium oxide, using oxygen as the oxidant: 4 Co3O4 + 18 Na2O + 7 O2 → 12 Na3CoO4 A number of organometallic Co(V) complexes have also been reported. (en)
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  • Percobaltates are chemical compounds where the oxidation state of cobalt is +5. This is the highest established oxidation state of cobalt. The simplest of these are bi-metallic Group 1 oxides such as sodium percobaltate (Na3CoO4); which may be produced by the reaction of cobalt(II,III) oxide and sodium oxide, using oxygen as the oxidant: 4 Co3O4 + 18 Na2O + 7 O2 → 12 Na3CoO4 The potassium salt can be synthesized similarly; its magnetic moment has indicated the existence of cobalt(V). No crystallographic analysis has been reported for either material. Percobaltates can be stabilized by use of oxides or fluorides. A number of organometallic Co(V) complexes have also been reported. (en)
  • 高钴酸盐可表示为M3CoO4，是钴元素目前发现的最高价化合物。在400 °C和100个大气压下加热四氧化三钴与氧化钠的混合物可以制得不纯的高钴酸钠（Na3CoO4）： 也可以用类似方法制备高钴酸钾（K3CoO4），磁性研究表明其中含有Co(V)。 (zh)
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