Tetranuclear Ni(II) and Co(II) Schiff-base complexes with an M4O6 defective dicubane-like core: zero-field SMM behavior in the cobalt analogue

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73583686" target="_blank" >RIV/61989592:15310/17:73583686 - isvavai.cz</a>
Result on the web
<a href="http://pubs.rsc.org/en/content/articlepdf/2017/nj/c7nj02281f" target="_blank" >http://pubs.rsc.org/en/content/articlepdf/2017/nj/c7nj02281f</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c7nj02281f" target="_blank" >10.1039/c7nj02281f</a>

Result language
angličtina
Original language name
Tetranuclear Ni(II) and Co(II) Schiff-base complexes with an M4O6 defective dicubane-like core: zero-field SMM behavior in the cobalt analogue
Original language description
Two isostructural tetranuclear M(II)(4) complexes with the general formula [M-4(L)(4)(CH3OH)(2)] were prepared by the reaction of M(CH3COO)(2)center dot 4H(2)O and H2L in the presence of Pr3N (M = Ni in 1, Co in 2, H2L = 2-{(E)-[(2-hydroxyphenyl)imino]methyl} phenol, Pr3N = tripropylamine). The crystal structure of 1 was determined by single-crystal X-ray diffraction and it was revealed that it possesses the defective dicubane {Ni4O6}(2-) core with two penta-and two hexacoordinate Ni atoms. The isostructurality of both complexes was confirmed by powder X-ray diffraction measurements. The analysis of the static magnetic data revealed that the prevailing antiferromagnetic interaction leads to the diamagnetic ground state in 1, whereas the ferromagnetic interactions dominate in 2. The analysis of magnetic data was supported by broken-symmetry DFT and CASSCF/NEVPT2 calculations, where the latter disclosed large magnetic anisotropy in both compounds. Moreover, the measurements of ac susceptibility in the zero-applied magnetic field confirmed the presence of slow-relaxation of magnetization in 2 and thus, this compound behaves as a single-molecule magnet.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
<a href="/en/project/LO1305" target="_blank" >LO1305: Development of the center of advanced technologies and materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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