Abstract
The structure of the title compound, [Zn(2)I(4)(C(34)H(52)N(4)Si(4))(2)], has been determined from synchrotron data, λ = 0.70000 Å. The complete metallacyclic mol-ecule is generated by crystallographic inversion symmetry, with the Zn(II) ion located in a general position. The 1,3-bis-(di-methyl-silyl-3-pyridine)-propane ligand binds to two zinc(II) ions in a horse-shoe fashion, resulting in formation of a dimeric 24-membered macrocycle. The Zn(II) ion has a typical tetra-hedral geometry via two iodide ions and two N donor atoms of the 1,3-bis-(di-methyl-silyl-3-pyridine)-propane ligand. The macrocyclic dimers inter-act via weak inter-actions [I⋯H (H(3)CSi-) = 3.08, 3.27 Å].