A review of recent advances in non-enzymatic electrochemical creatinine biosensing.

Coordination properties of the bioligands creatinine and creatine in various reaction media

Assay of creatinine using the peroxidase activity of copper-creatinine complexes.

Spectroscopic and structural study of the newly synthesized heteroligand complex of copper with creatinine and urea.

Crystal structure, ir-spectrum and electrochemical behaviour of cu(creatinine)2cl2

Cobalt(II) complexes of creatinine [Co(creat)2X2] (X = Cl, Br, I or NCS) and [Co(creat)2X2(H2O)2] (X = HCO2, HOCH2CO2 or CNCH2CO2) have been prepared. Their i.r. spectra show an increase in ν(NH) of the cyclic secondary amine group, compared to free ligand (3300 cm−1), indicating that cyclic nitrogen is involved in coordination. The thiocyanate group coordinates through nitrogen and carboxylates coordinate as univalent unidentate ligands. The electronic spectra and magnetic moments suggest a d7 configuration for cobalt: a tetrahedral geometry (4.4 B.M.) for halide and thiocyanate complexes, and an octahedral geometry (5.0 B.M.) for the carboxylate complexes. On heating, the ligand moiety is lost and the respective cobalt halide or cobalt carboxylate is formed, which is converted finally into Co3O4. There is a correlation between the high intensity electronic transitions and the polarographic half-wave potentials.

Srinivasan Muralidharan

Papers

Cobalt(II) Complexes of Creatinine