Alkyl Pyridinium Iodocuprate(I) Clusters: Structural Types and Charge Transfer Behavior.

The reaction of copper(I) iodide (CuI) and N-alkyl pyridinium (RPy, R = H, Me, Et, -propyl = Pr, -butyl = Bu, -pentyl = Pn, and -hexyl = Hx) or N-butyl-3-substituted pyridinium (N-Bu-3-PyX, X = I, Br, Cl, CN, and OMe) iodide salts yielded pyridinium iodocuprate(I) salts. Crystal structures of iodocuprate ions coupled with RPy include {CuI } (R = H), {CuI } (R = Me), {CuI } (R = Et), {CuI } (R = Pr), and {CuI } (R = Bu, Pn, Hx). The [N-Bu-3-PyX] ions were typically paired with the 1-D chain {CuI } .