authors |
Sen, R; Lopes, AML; Lin, Z; Brandao, P; Araujo, JP |
nationality |
International |
journal |
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY |
author keywords |
Nickel; Chirality; Schiff-base; Polynuclear complex; Magnetic properties |
keywords |
TETRANUCLEAR CUBANE; MAGNETIC-PROPERTIES; CLUSTER COMPLEXES; NI-4; COORDINATION; CARBOXYLATE; FAMILY; UNITS; DICUBANE; BEHAVIOR |
abstract |
A new chiral tetranuclear Ni4O4 complex has been developed with distorted cubane-type structure. The structure was determined by single-crystal X-ray diffraction. The new tetradentate Schiff-base ligand in this compound was synthesized via the condensation of 2 '-hydroxyacetophenone and (R)-3-amino-1,2-propanediol. Temperature dependent magnetization measurements showed a predominant ferromagnetic interaction among the four Ni centers. The best fit of the chi T vs. T curve results in a solution with two exchange interaction values, J(1)=12.7 cm(-1), and J(2)=1.6 cm(-1) which are appreciably correlated with the structure. Ac susceptibility data were collected between 2 and 28 K and it is found that the data display a small frequency dependence with the peaks shifting to higher temperatures with increasing frequencies. |
publisher |
WILEY-V C H VERLAG GMBH |
issn |
1434-1948 |
isbn |
1099-0682 |
year published |
2019 |
volume |
2019 |
issue |
34 |
beginning page |
3840 |
ending page |
3845 |
digital object identifier (doi) |
10.1002/ejic.201900662 |
web of science category |
Chemistry, Inorganic & Nuclear |
subject category |
Chemistry |
unique article identifier |
WOS:000484420200001
|