| Abstract: | Abstract The EPR Spectrum of Cu(II)-doped into a single crystal of α-glycylglycine is reported. The results show that there are several magnetically non-equivalent sites, only two of which were strong enough to be analysed. The values parameters in the spin Hamiltonian deduced from the data are: g z =2.242 ± 0.003, g x =2.062 ± 0.005, g y =2.044 ± 0.005, A z =162.8 ± G, A x =32.6 ± 2.0 G, A y =21.6 ± 2.0 G. The Cu(II) environment seems to be square planar and involving four ligand molecules, each molecule forming one bond with the copper. The nitrogens are located in the trans position. The bonding is chiefly in-plane sgrave]-bonding. |
