The FT-IR spectroscopic investigation of two dimensional polymeric complexes of 2-aminopyrimidine

The coordination polymeric compounds, M(2APM)₂Ni(CN)₄ (where M=Mn, Co, Ni or Cd; 2APM=2-aminopyrimidine) have been prepared for the first time and their FT-IR spectra are reported in the 400–4000 cm⁻¹ region. The spectral features suggest that the compounds are similar in structure to the Hofmann type two dimensional coordination polymeric compounds, formed with Ni(CN)₄⁻² ions bridged by M(2APM)₂⁺² cations. 2APM is coordinated to M(II) through one of the pyrimidine ring nitrogen atoms; the amino group is not involved in the complex formation. The coordination effect on the 2APM vibrational wavenumbers is analysed.