Verification of X-ray absorption parameters of some cobalt (II) and copper (II) complexes with randic indices

The application of Randic indices (chi) for verification of X-ray absorption near edge structure parameters of some Co(II)-complexes and Cu (II) complexes with a series of hydroxamic acid ligands is described. Chemical shifts (Delta E) and fractional oxidation numbers (Z(eff)) have been correlated with these indices. The regression analysis of indices have indicated that the chemical shift and fractional oxidation number are sensitive to the topological structure of coordinating ligands. These can be successfully used for estimating and investigating these parameters.