METAL ION COMPLEXES OF 2(1H)-TETRA- HYDROPYRIMIDINONE (CYCLIC PROPYLENE UREA) .I. PREPARATION SPECTRAL AND MAGNETIC PROPERTIES

Complexes of 2(1H)-tetrahydropyrimidinone (cyclic propylene urea, or PU) with the metal ions Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) have been prepared. Infra-red spectra of PU, eight of its complexes formed with halides, and one with an acetate, have been analyzed and compared with similar spectra of complexes formed with cyclic ethylene urea. X-ray powder diffraction data, reflectance spectra of crystals, and magnetic susceptibility data have been determined and used as the basis for proposed structures of complexes. © 1969.