Supramolecular confinement of C60, S8, P4Se3 and toluene by metal(II) macrocyclic complexes

Abstract

Treatment of S₈ or P₄Se₃ with {5,7,12,14-tetramethyldibenzo[b,i]-1,4,8,11-tetraaza[14]annulenato}metal(II) [ M(TMTAA)] in carbon disulfide afforded the solid state 1∶2 inclusion complexes [(S₈){M(TMTAA)}₂], M = Ni or Cu (isostructural), or [(P₄Se₃){Ni(TMTAA)}₂]. A toluene inclusion complex [(MeC₆H₅)Ni(TMTAA)] resulted from the recrystallisation of [Ni(TMTAA)] from toluene. Recrystallisation of [Ni(TMTAA)] from CS₂–hexane resulted in the unsolvated complex. All complexes are comprised of interlocking dimers of the macrocycle, and in the inclusion complexes these dimers act as homotopic divergent receptors either through the methyl- or phenyl-lined surfaces. Solid state 1∶1 C₆₀ inclusion complexes of [M(TMTAA)], M = Cu or Zn, have individual macrocycle molecules acting as heterotopic divergent receptors.