Field-induced single-ion magnet based on a quasi-octahedral Co(ii) complex with mixed sulfur-oxygen coordination environment
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KORCHAGIN, Denis, GUREEV, Ya, YURIEVA, Elena, SHILOV, Gennadii, AKIMOV, Alexander, MISOCHKO, Eugenii, MORGUNOV, Roman, ZAKHAROV, Konstantin, VASILIEV, Alexander, PALII, Andrew, LOHMILLER, Thomas, HOLLDACK, Karsten, ALDOSHIN, Serghei. Field-induced single-ion magnet based on a quasi-octahedral Co(ii) complex with mixed sulfur-oxygen coordination environment. In: Dalton Transactions, 2021, nr. 39(50), pp. 13815-13822. ISSN 1477-9226. DOI: https://doi.org/10.1039/d1dt02413b
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Dalton Transactions
Numărul 39(50) / 2021 / ISSN 1477-9226 /ISSNe 1477-9234

Field-induced single-ion magnet based on a quasi-octahedral Co(ii) complex with mixed sulfur-oxygen coordination environment

DOI:https://doi.org/10.1039/d1dt02413b

Pag. 13815-13822

Korchagin Denis1, Gureev Ya2, Yurieva Elena21, Shilov Gennadii1, Akimov Alexander1, Misochko Eugenii1, Morgunov Roman1, Zakharov Konstantin2, Vasiliev Alexander2, Palii Andrew13, Lohmiller Thomas4, Holldack Karsten4, Aldoshin Serghei1
 
1 Institute of Problems of Chemical Physics, Russian Academy of Sciences,
2 Lomonosov Moscow State University,
3 Institute of Applied Physics,
4 Helmholtz-Zentrum Berlin für Materialien und Energie
 
 
Disponibil în IBN: 24 octombrie 2021


Rezumat

Synthesis and characterization of structure and magnetic properties of the quasi-octahedral complex (pipH2)[Co(TDA)2] 2H2O (I), (pipH22+ = piperazine dication, TDA2- = thiodiacetic anion) are described. X-ray diffraction studies reveal the first coordination sphere of the Co(ii) ion, consisting of two chelating tridentate TDA ligands with a mixed sulfur-oxygen strongly elongated octahedral coordination environment. SQUID magnetometry, frequency-domain Fourier-transform (FD-FT) THz-EPR spectroscopy, and high-level ab initio SA-CASSCF/NEVPT2 quantum chemical calculations reveal a strong "easy-plane"type magnetic anisotropy (D ≈ +54 cm-1) of complex I. The complex shows field-induced slow relaxation of magnetization at an applied DC field of 1000 Oe.

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<dc:creator>Korchagin, D.V.</dc:creator>
<dc:creator>Gureev, Y.E.</dc:creator>
<dc:creator>Yurieva, E.A.</dc:creator>
<dc:creator>Shilov, G.V.</dc:creator>
<dc:creator>Akimov, A.V.</dc:creator>
<dc:creator>Misochko, E.Y.</dc:creator>
<dc:creator>Morgunov, R.B.</dc:creator>
<dc:creator>Zakharov, K.V.</dc:creator>
<dc:creator>Vasiliev, A.N.</dc:creator>
<dc:creator>Palii, A.V.</dc:creator>
<dc:creator>Lohmiller, T.</dc:creator>
<dc:creator>Holldack, K.</dc:creator>
<dc:creator>Aldoshin, S.M.</dc:creator>
<dc:date>2021-10-21</dc:date>
<dc:description xml:lang='en'><p>Synthesis and characterization of structure and magnetic properties of the quasi-octahedral complex (pipH2)[Co(TDA)2] 2H2O (I), (pipH22+ = piperazine dication, TDA2- = thiodiacetic anion) are described. X-ray diffraction studies reveal the first coordination sphere of the Co(ii) ion, consisting of two chelating tridentate TDA ligands with a mixed sulfur-oxygen strongly elongated octahedral coordination environment. SQUID magnetometry, frequency-domain Fourier-transform (FD-FT) THz-EPR spectroscopy, and high-level ab initio SA-CASSCF/NEVPT2 quantum chemical calculations reveal a strong &quot;easy-plane&quot;type magnetic anisotropy (D &asymp; +54 cm-1) of complex I. The complex shows field-induced slow relaxation of magnetization at an applied DC field of 1000 Oe.</p></dc:description>
<dc:identifier>10.1039/d1dt02413b</dc:identifier>
<dc:source>Dalton Transactions 50 (39) 13815-13822</dc:source>
<dc:title>Field-induced single-ion magnet based on a quasi-octahedral Co(ii) complex with mixed sulfur-oxygen coordination environment</dc:title>
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