X-ray absorption fine structure studies of some cobalt(II) complexes

X-ray absorption fine structure studies of some cobalt(II) complexes were carried oat using a Seifert x-ray generator and Cauchois-type bent crystal x-ray spectrograph of 0.4 m radius. It was found that the graphical method originally proposed by Lytle et al. gives useful information about the bond length and also the environment of the absorbing atom. The phase parameters of the first coordination shell, alpha(1) and B-1, provide valuable information about the forward- and back-scattering atoms, respectively. The total phase shift delta(1) gives an idea of the periodicity of the x-ray absorption fine structure. It was also found that the periodicity is affected by the presence of different ligands in the studied cobalt(II) complexes.