Magnetoactive binuclear copper(II) complexes based on β-aminovinylimines
摘要:
beta-Aminovinylimines containing bulky substituents at the donor nitrogen atoms and copper(II) chelates based on them were synthesized. The compounds were studied by single crystal and powder X-ray diffraction, EXAFS, NMR, EPR, and UV/Vis spectroscopy, and magnetochemistry. The complexes with halide bridges exhibit a ferromagnetic type of spin-spin interaction. The metal chelate containing a phenyl substituent in the gamma-position of the aminovinylimino ligand absorbs atmospheric oxygen in a methylene dichloride solution, which gives rise to a dimer with oxygen bridges exhibiting an anti ferromagnetic type of spin-spin interaction.