Solvent-induced structural diversity in tetranuclear Ni(II) Schiff-base complexes: the first Ni-4 single-molecule magnet with a defective dicubane-like topology
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33161112" target="_blank" >RIV/61989592:15310/16:33161112 - isvavai.cz</a>
Result on the web
<a href="http://pubs.rsc.org/en/content/articlepdf/2016/dt/c6dt03520e" target="_blank" >http://pubs.rsc.org/en/content/articlepdf/2016/dt/c6dt03520e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c6dt03520e" target="_blank" >10.1039/c6dt03520e</a>
Alternative languages
Result language
angličtina
Original language name
Solvent-induced structural diversity in tetranuclear Ni(II) Schiff-base complexes: the first Ni-4 single-molecule magnet with a defective dicubane-like topology
Original language description
Two tetranuclear Ni-II complexes, namely [Ni-4(L)(4)(CH(3)OH())3(H2O)]center dot CH3OH (1) and (Pr3NH)(2)[Ni-4(L)(4) (CH3COO)(2)] (2, Pr3N = tripropylamine), were synthesized from a tridentate Schiff base ligand H2L (2-[(E)-(2-hydroxybenzylidene) amino] phenol) and Ni(CH3COO)(2)center dot 4H(2)O, using different solvents and their ratios (CH3OH and/or CH2Cl2). The prepared Ni-4 complexes are of different structural types, involving an Ni4O4 cubane-like core (1) and Ni4O6 defective dicubane-like core (2), with all the Ni atoms hexacoordinated. The complexes were characterized by elemental analysis, FT-IR spectroscopy, variable temperature and field magnetic measurements, and single crystal X-ray analysis. The DFT and CASSCF/NEVPT2 theoretical calculations were utilized to reveal information about the isotropic exchange parameters (J(ij)) and single-ion zero-field splitting parameters (D-i, E-i). The variable temperature magnetic data suggested the competition of the antiferromagnetic and ferromagnetic intracluster interactions in compound 1, which is in contrast to compound 2, where all intracluster interactions are ferromagnetic resulting in the ground spin state S = 4 with an easy-axis type of anisotropy quantified by the axial zero-field splitting parameter D = -0.81 cm(-1). This resulted in the observation of a field-induced slow-relaxation of magnetization (U = 3.3-6.7 K), which means that the complex 2 represents the first Ni-4 single-molecule magnet with the defective dicubane-like topology.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
—
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Dalton Transactions (print)
ISSN
1477-9226
e-ISSN
—
Volume of the periodical
45
Issue of the periodical within the volume
46
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
18622-18634
UT code for WoS article
000388369000027
EID of the result in the Scopus database
—