The infrared and electronic absorption spectra of a series of new heteroleptic chelated copper (II) complexes [Cu(diamine)(acac)]X that encompass N,N'-1,6-bis(2-bromophenyl)-2,5-diazahexane (diamine), acetylacetonate (acac) and ClO , BPh , PF and BF (X) were studied. The IR, electronic absorption spectra and 4 4 6 4 the molar conductivity of the newly prepared complexes were presented and discu...