Synthesis and characterization of palladium(II) complexes of purines and amino acids

Abstract

Complexes of types [Pd(CH₃COO)(na)])xH₂O, Hna=adenine (Hade) or guanosine (Hguo), x=2 or 3; [Pd(CH₃COO)₂(0.5 Hado)₂H₂O, Hado=adenosine; [Pd(NH₃)(na)(aa)3H₂O, Hna=Hguo or inosine (Hino), Haa=glycine or alanine and

[Pd(NH₃)(gly)(0.5 ade)]₂NO₃H₂O have been synthesised and characterized by elemental and thermal analyses, electronic, infrared, ¹H NMR spectral and XPS studies. In acetato complexes, adeninate and guanosinate act as bridging ligand through the ring nitrogens N3 or N1 and N9, and N1 and N7 respectively giving polymeric structure while adenosine bridges the Pd(II) centers through N1 and N7. In amino acidato complexes, nucleosides coordinate through N1 to Pd(II) and adeninate

<span style="font-size:12.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">bridges the two adjacent Pd(II) through N I or N3 and N9.</span>