(C Co3 (C O)9)2

C₂₀Co₆O₁₈

Brice, M.D.Penfold, B.R.

Inorganic Chemistry (1972) 11, 1381-1384

a=16.368Å   b=9.45Å   c=18.906Å

α=90°   β=106.79°   γ=90°