Journal
DALTON TRANSACTIONS
Volume 50, Issue 39, Pages 13815-13822Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt02413b
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Funding
- Ministry of Science and Higher Education of the Russian Federation [AAAA-A19-119092390079-8]
- NUST MISiS grant [K2-2020-039]
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The study reports the synthesis and characterization of a quasi-octahedral complex, showing magnetic properties with strong easy-plane type magnetic anisotropy. The complex exhibits field-induced slow relaxation of magnetization at an applied DC field of 1000 Oe.
Synthesis and characterization of structure and magnetic properties of the quasi-octahedral complex (pipH(2))[Co(TDA)(2)] 2H(2)O (I), (pipH(2)(2+) = piperazine dication, TDA(2-) = 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 approximate to +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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