New Hofmann-type complexes in the form of M(AMPM)2Ni(CN)4 (where M = Mn, Co, Ni or Cd; AMPM= 2-amino-4-methylpyrimidine) were prepared in powder form and their FT-IR, far-IR, FT-Raman spectra are reported. The complexes are also characterized by thermal gravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and elemental analyses measurements. AMPM molecules are found to involve coordination through one of the pyrimidine ring nitrogen atoms. The spectral features suggest that the compounds are similar in structure to the Hofmann type two dimensional coordination polymer compounds, formed with Ni(CN)42- ions bridged by M(AMPM)2 2+ cations. Vibrational bands originated from both AMPM and Ni(CN)4 group were assigned.