Synthesis and spectroscopic characterization of Cu(II) containing chlorocadmiumphosphate Cd(HPO4)Cl·[H3N(CH2)6NH3]0.5 crystals

Chlorocadmiumphosphate Cd(HPO4)Cl·[H3N(CH2)6NH3]0.5 crystals containing Cu(II) ions have been successfully synthesized at room temperature by using organic amine 1,6-diamino hexane as a template. The samples are characterized by X-ray powder diffraction, Thermal and spectroscopic studies. These are crystallizes in the monoclinic crystal system with cell dimensions: a = 1.7697, b = 0.6576, c = 1.9026 nm and β = 106.5°. FT-IR spectrum showed the absorption bands related to PO4, NH3+ ions and other organic molecule vibrations originated from the templated molecule. The prepared crystals are stable at room temperature and as well as up to around 300 °C which were confirmed by thermal analysis. Optical absorption and EPR studies suggest that Cu(II) ion enters in to the lattice as tetragonally distorted octahedral symmetry, for which crystal field and spin-Hamiltonian parameters are calculated. Bonding parameters are suggesting that there exists partial covalent nature between Cu(II) ions and ligands.

This figure illustrates the FT-IR spectrum of copper ions doped chlorocadmiumphosphate crystals. The spectrum shows the characteristic vibrational bands of phosphate ions and as well as organic amine molecules.Figure optionsDownload as PowerPoint slideHighlights
► This method is simple to synthesize frame-work materials at room temperature.
► The prepared samples are highly crystalline and stable up to 300 °C temperature.
► Site symmetry for copper ions is tetragonal elongated octahedral site symmetry.