Interaction of nickel metal and two lanthanide metals, lanthanum (La) and europium (Eu), with two enamine compounds prepared from furyltrifluoroacetate with methylamine and aniline, formed six different complexes. The metal of the third transition chain is nickel metal and two metals of lanthanides, namely lanthanum and europium, through their interaction with two enamine compounds prepared from the interaction of furyltrifluoroacetate with methylamine and aniline as a result of these interactions formed six complexes, four of which have the characteristics of diamagnetic for complexes prepared from metals lanthanum and nickel and their hybridization is d2sp3 and dsp2 respectively and paramagnetic for complexes prepared from europium hybridization d2sp3 with the survival of electrons Isolated in the orbital f, causing the complexes to be paramagnetic according to magnetic susceptibility measurements. According to the electrical conductivity measurements, no ions are outside the coordination sphere. The electrical conductivity measurements show no ions outside the coordinate sphere. Hence, the bond is in the form of a covalent coordinate bond between the oxygen atom and the metals to which it is bonded, i.e., the charge of the oxygen atom equalizes the metal charge. The measurements of I.R. spectra prove this after comparing the spectra of enamine compounds with the complexes prepared from them, while the nitrogen atom is connected to the metals by a donor coordinate bond, i.e., the hydrogen atom remains attached to it in the complexes. After the preparation of amine compounds, a great controversy emerged during the diagnosis of compounds, which was to determine which oxygen atoms were replaced by a nitrogen atom. After preparation, many isomers appeared, so it required the diagnosis of compounds prepared with several NMR measurements, namely 1H NMR, 13C NMR, 19F NMR, 15N NMR, HSQC, HMBC, COSY, DEPT135. After these measurements, the prepared amine compounds and the complexes prepared from them were characterized.