Magnetoactive binuclear copper(II) complexes based on β-aminovinylimines |
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Authors: | A. I. Uraev V. N. Ikorskii M. P. Bubnov K. A. Lysenko V. G. Vlasenko I. G. Borodkina G. S. Borodkin D. A. Garnovskii A. D. Garnovskii |
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Affiliation: | (1) Institute of Physical and Organic Chemistry, Rostov State University, pr. Stachki 1943/3, Rostov-on-Don, 344104, Russia;(2) International Tomography Center, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia;(3) Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. Tropinina 49, Nizhni Novgorod, 603600, Russia;(4) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia;(5) Research Institute of Physics, Rostov State University, pr. Stachki 194, Rostov-on-Don, 344104, Russia;(6) Southern Scientific Center, Russian Academy of Sciences, Rostov-on-Don, Russia |
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Abstract: | β-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 γ-position of the aminovinylimino ligand absorbs atmospheric oxygen in a methylene dichloride solution, which gives rise to a dimer with oxygen bridges exhibiting an antiferromagnetic type of spin-spin interaction. |
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