Studies on coordination compounds—VIII. Syntheses, structural, magnetic, spectral and thermal properties of some cobalt(II), nickel(II) and copper(II) complexes of 2-aminopyrimidine☆

Abstract The complexes bis[triaqua(2-aminopyrimidine)-μ-sulphato-O,O′-cobalt(II)] dihydrate ( 1 ), catena -[diaqua(2(2-aminopyrimidine))-μ-sulphato-O,O′nickel(II)]2-amino-pyrimidine ( 2 ), [pentaaqua(2-aminopyrimidine)nickel(II)]sulphate 2-aminopyrimidine ( 3 ) and catena -[aqua(2(2-aminopyrimidine))-μ-sulphato-O,O′-copper(II)] dihydrate ( 4 ) were prepared, structure determined by X-ray methods and physical properties studied by magnetic, IR, NMR, EPR and reflectance methods. The thermal behaviour was studied by TG and mass spectrometric methods. The results are discussed on a structural basis.