(1,4,7,10,13,16-Hexaoxa­cyclo­octa­decane-κ⁶O)bis­(tetra­hydro­furan-κO)potassium bis­[(1,2,3,4-η)-anthracene]cobalt(−I) tetra­hydro­furan monosolvate

The asymmetric unit of the title compound, [K(C₁₂H₂₄O₆)(C₄H₈O)₂][Co(C₁₄H₁₀)₂]·C₄H₈O, consists of one cationic potassium complex, one anionic cobalt dianthracene complex and one tetra­hydro­furan solvent mol­ecule. The potassium cation is situated at the centre of an 18-crown-6 mol­ecule and between two tetra­hydro­furan mol­ecules, the latter coordin­ating above and below the mean plane formed by the O atoms of the crown ether mol­ecule. The Co atom is coordinated by eight C atoms of two anthracene mol­ecules in an η⁴ manner. The third free tetra­hydro­furan mol­ecule shows orientational disorder on two partially occupied positions [occupancy ratio 0.561 (8):0.439 (8)].