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 SM ISO690:2012OSTROVSKY, Sergei M., TOMKOWICZ, Zbigniew, HAASE, Wolfgang. Exchange-coupled cobalt(II) Dimer with unusual magnetic circular dichroism saturation behavior. In: Inorganic Chemistry, 2010, vol. 49, pp. 6942-6947. ISSN 0020-1669. DOI: https://doi.org/10.1021/ic100556p |
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  Inorganic Chemistry |
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| Volumul 49 / 2010 / ISSN 0020-1669 | ||||||
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| DOI:https://doi.org/10.1021/ic100556p | ||||||
| Pag. 6942-6947 | ||||||
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The exchange-coupled complex [Co2(μ-H2O)(μ-OAc) 2(OAc)2(tmen)2] (OAc = CH3COO - acetato; tmen = N,N,N′,N′-tetramethylenediamine) has been studied by magnetic circular dichroism (MCD) spectroscopy and magnetization measurements. A peculiar behavior of the MCD spectra was observed with a change in the magnetic field. The intensity of particular lines initially increases, then decreases with an increase in the magnetic field strength, disappears with a further field increase, and appears again with the opposite sign. This behavior was explained by the overlap of the electronic transitions at different but near wavelengths. The obtained MCD magnetization curves, together with magnetization obtained by a SQUID magnetometer, are well reproduced using the Hamiltonian, which takes into account an orbital magnetic moment. |
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