Isolated and Edge‐Connected Tetramers {(C 2 ) 2 O 2 Dy 14 } in the Crystal Structures of {(C 2 ) 2 O 2 Dy 14 }I 24 and {(C 2 ) 2 O 2 Dy 12 }I 18

{(C 2 ) 2 O 2 Dy 14 }I 24 ( 1 ) and {(C 2 ) 2 O 2 Dy 12 }I 18 ( 2 ) were obtained by solid‐state reactions in sealed tantalum containers at a temperature of 1000 °C. {(C 2 ) 2 O 2 Dy 14 }I 24 crystallizes in the space group P $\bar1$ with a = 972.97(14) pm, b = 1033.03(13) pm, c = 1677.0(2) pm, α = 101.42(1)°, β = 92.72(1)°, γ = 112.75(1)° and V = 1509.3(3) · 10 6  pm 3 , Z = 2, and is isotypic with the analogous yttrium and erbium cluster complexes. The tetrameric {(C 2 ) 2 O 2 R 14 }I 32 cluster complexes consist of corner‐sharing tetrahedra with endohedral oxygen atoms to which octahedra encapsulating C 2 dumbbells are attached on both sides. The tetramers are connected via iodide bridges yielding, e.g., {(C 2 ) 2 O 2 Dy 14 }I 24 . Connection of the tetramers through common cluster edges leads to the one‐dimensional polymeric cluster complex {(C 2 ) 2 O 2 Dy 12 }I 18 . It crystallizes in the space group P 6/ m with a = 2024.18(8) pm, c = 1299.21(4) pm, V = 4610.1(3) × 10 6  pm 3 and Z = 8.