catena-Poly[[(tetra­hydro­furan-[kappa]O)potassium]-[mu]-([eta]⁵:[eta]⁵)-2,3,4,5-tetra­methyl-1-n-pentyl­cyclo­penta­dien­yl]

The title compound, [K(C₁₄H₂₃)(C₄H₈O)]_n, comprises zigzag chains of alternating bridging 2,3,4,5-tetra­methyl-1-n-pentyl­cyclo­penta­dienyl ligands and potassium ions, with an ancillary tetra­hydro­furan ligand in the coordination environment of potassium. The coordination polymer strands so formed extend by 2₁ screw symmetry in the b-axis direction. The chemically modified cyclo­penta­dienyl ligand, with a tethered n-pentyl group, was synthesized from 2,3,4,5-tetra­methyl­cyclo­pent-2-enone by a Grignard reaction.