Some compounds of nickel(II) and copper(II) with 1,4,8,11-tetraazaundecane

Abstract

Preparations of the compounds of 1,4,8,11-tetraazaundecane (L),[Ni₂(L)₃] X, X = (ClO₄)₂ and Cl₂,3H₂O; [Ni(L)(en)] X, X = (ClO₄)₂ and Cl₂,H₂O; [Ni(L)X₂] H₂O, X = NCS and N₃; [Ni(L)(OAc)₂],3[(CH₃)₂CHOH]; [Ni(L)X] Y, X = NCS, Y = BF₄; X = N₃, Y = BF₄, ClO₄; X = Cl, Y = ClO₄; X = NO₃, Y = ClO₄; X = CH₃CO₂, Y = BF₄, ClO₄; X = acac = CH₃COCHCOCH₃, Y = BF₄, ClO₄; [{Ni(L)}₂C₂O₄l X₂, X = BF₄, ClO₄; [Ni(L)] ZnCl₄ and [Cu(L)] ZnCl₄,H₂O and also the triethylenetetramine compound [Ni(trien)(acac)] ClO₄, are reported. Infrared and d-d electronic spectra, and magnetic susceptibilities are reported. The compounds [Ni(L)X₂] H₂O, X = NCS, N₃; [Ni(L)(OAc)₂],3[(CH₃)₂CHOH]; [Ni(L)X] Y, X = NCS, N₃, Cl, Y = ClO₄ or BF4 are assigned trans configurations with the tetramine in 'planar' coordination, and the remaining compounds are assigned structures with the tetramine in 'folded' coordination.