摘要:
Simple and mixed ligand oxovanadium(IV) and dioxouranium(VI) complexes with adenine and uracil as well as with adenine and thymine have been synthesized. The new complexes were characterised by elemental analyses. Spectral studies suggest that adenine is coordinated to the metal ions through the N(7) and N(9) atoms. Uracil is coordinated through the C-4 = O group while thymine through its C-2 = O group to the metal ions. The complexes involving adenine are polymeric in nature with adenine bridges between metal ions. The oxovanadium(IV) complexes exhibit the coordination number five and the dioxouranium(VI) complexes the coordination number six. Powder X-ray diffraction studies indicate orthorhombic symmetry for the oxovanadium(IV) and tetragonal symmetry for the dioxouranium(VI) mixed ligand complexes.