Electron paramagnetic resonance spectra of cobalt and copper complexes of ethanolamines is studied at −110 and 25°C. The g values are determined. The magnetic susceptibilities of the cobalt, nickel and copper complexes are measured in the 4.2 − 293°K temperature range. The Curie - Weiss constant, , values proved that M-M Interactions appeared In the cobalt and copper complexes and didn't appear in the nickel complexes.