Complex array structures formed by metal complexes of N,N ′-p- phenylenedimethylenebis(4-methylpyridin-2-one)

Abstract

The syntheses of the ‘extended reach’ ligand N,N′-p- phenylenedimethylenebis(4-methylpyridin-2-one) (L) and of a range of its metal complexes with Mn ^II , Co ^II , Ni ^II , Zn ^II , Cd ^II , Y ^III , and lanthanide ions have been accomplished. X-Ray studies showed that in the compound {[MnL ₃ ](ClO ₄ ) ₂ } _{+ n} octahedrally co-ordinated manganese centres are connected by L bridges so as to form a three-dimensional array of contiguous rhomboidal ‘boxes’. The analogous compounds with Co ^II , Ni ^II , Zn ^II and Cd ^II have the same structure. The polymeric compound {[Cu ₄ L ₅ Cl ₈ ]·2MeOH} _n forms a complex array of cross-linked chains containing both four- (distorted tetrahedral) and five-co-ordinate (distorted square pyramidal) copper centres in equal proportions.