Die Kristallstruktur von Na4CoO4[1]

The Crystal Structure of Na₄CoO₄ According to X-Ray investigations on single crystals, Na₄CoO₄ crystallizes triclinic (P1, a = 8.64₈, b = 5.70₂, c = 6.40₀ Å, α = 123.9°, β = 98.1°, γ = 99.2°). There are almost tetrahedral CoO₄-groups; sodium is coordinated by four or five O^2?.