Six cation-templated halometal complexes and C–H activation of alkylene-bridged azoles

Abstract

Six dication-templated complexes were discovered in efforts to investigate the effect of linear imidazolium-based template, 1,ω-bis(3,3′-methylimidazolium)alkyl dibromide, on pure inorganic halometal clusters. Complexes {[C4(Mim)2](Pb2I6)}n (1) (ω = 4), {[C1(Mim)2] (Ag2I4)}n (2) (ω = 1), {[C3(Mim)2](Ag2I4)}n (3) (ω = 3), and {[C4(Mim)2](Ag2I4)}n (4) (ω = 4) possess 1-D chain architecture with different organic cations trapped in it. Compound {[C3′(Mim)2](CuBr3)} (5) (ω = 3) contains the mononuclear anion (CuBr3)2− and intra-molecular coupled organic cation with the formed seven-membered ring. {[C2(Mim)2S2]2(Cu2I2)}n (6) (ω = 2) presents an infinite 2-D coordination polymer as the first representative polyrotaxane example featuring the biimidazolium thiolate cation ligand. All compounds were further characterized with IR spectra and thermal analysis properties.