TY  - JOUR
AU  - Zianna, Ariadni
AU  - Šumar-Ristović, Maja
AU  - Hatzidimitriou, Antonis
AU  - Papadopoulos, Christos D.
AU  - Lalia-Kantouri, Maria
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1879
AB  - In this study, three novel tetranuclear nickel(II) cubane-type clusters with the general formula [Ni-4(L)(4)(mu(3)-CH3O)(4)(CH3OH)(4)] [L: the anion of 5-methyl-2-hydroxybenzaldehyde (1), 2-hydroxypropiophenone (2), and 2-hydroxybenzophenone (3)] were synthesized and characterized by single-crystal X-ray diffraction analysis. The crystal structure of each compound contains a tetranuclear cubane core [Ni4O4] based on an approximately cubic array of altering nickel and oxygen atoms with intracluster metal-metal separations of 3.04-3.14 . Each Ni(II) atom is surrounded by two oxygen atoms from the ligand (L) and by the mu(3)-CH3O oxygen atom that bridges three Ni atoms of the cubane core. The coordination sphere of Ni is completed with one methanol molecule and making six-coordinate with a distorted octahedral geometry. These complexes were characterized also by spectroscopy (IR and UV-Vis). Simultaneous TG/DTG-DTA techniques were used to analyze their thermal behavior under inert atmosphere, with particular attention to determine their thermal degradation pathways, which was found to be a multi-step decomposition accompanied by the release of the ligand molecules. Finally, the kinetic analysis of the decomposition processes was performed for the first step of complex (3), since only this verifies the requirement of applying an isoconversional method like Kissinger-Akahira-Sunose (KAS). For this step, we found the average value E (a) = 107.8 +/- A 4.5 kJ mol(-1).
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Synthesis, thermal analysis, and spectroscopic and structural characterizations of tetranuclear nickel(II) cubane-type clusters with 2-hydroxybenzaldehydes or 2-hydroxyphenones
VL  - 118
IS  - 3
SP  - 1431
EP  - 1440
DO  - 10.1007/s10973-014-4035-5
ER  - 

@article{
author = "Zianna, Ariadni and Šumar-Ristović, Maja and Hatzidimitriou, Antonis and Papadopoulos, Christos D. and Lalia-Kantouri, Maria",
year = "2014",
abstract = "In this study, three novel tetranuclear nickel(II) cubane-type clusters with the general formula [Ni-4(L)(4)(mu(3)-CH3O)(4)(CH3OH)(4)] [L: the anion of 5-methyl-2-hydroxybenzaldehyde (1), 2-hydroxypropiophenone (2), and 2-hydroxybenzophenone (3)] were synthesized and characterized by single-crystal X-ray diffraction analysis. The crystal structure of each compound contains a tetranuclear cubane core [Ni4O4] based on an approximately cubic array of altering nickel and oxygen atoms with intracluster metal-metal separations of 3.04-3.14 . Each Ni(II) atom is surrounded by two oxygen atoms from the ligand (L) and by the mu(3)-CH3O oxygen atom that bridges three Ni atoms of the cubane core. The coordination sphere of Ni is completed with one methanol molecule and making six-coordinate with a distorted octahedral geometry. These complexes were characterized also by spectroscopy (IR and UV-Vis). Simultaneous TG/DTG-DTA techniques were used to analyze their thermal behavior under inert atmosphere, with particular attention to determine their thermal degradation pathways, which was found to be a multi-step decomposition accompanied by the release of the ligand molecules. Finally, the kinetic analysis of the decomposition processes was performed for the first step of complex (3), since only this verifies the requirement of applying an isoconversional method like Kissinger-Akahira-Sunose (KAS). For this step, we found the average value E (a) = 107.8 +/- A 4.5 kJ mol(-1).",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Synthesis, thermal analysis, and spectroscopic and structural characterizations of tetranuclear nickel(II) cubane-type clusters with 2-hydroxybenzaldehydes or 2-hydroxyphenones",
volume = "118",
number = "3",
pages = "1431-1440",
doi = "10.1007/s10973-014-4035-5"
}

Zianna, A., Šumar-Ristović, M., Hatzidimitriou, A., Papadopoulos, C. D.,& Lalia-Kantouri, M.. (2014). Synthesis, thermal analysis, and spectroscopic and structural characterizations of tetranuclear nickel(II) cubane-type clusters with 2-hydroxybenzaldehydes or 2-hydroxyphenones. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 118(3), 1431-1440.
https://doi.org/10.1007/s10973-014-4035-5

Zianna A, Šumar-Ristović M, Hatzidimitriou A, Papadopoulos CD, Lalia-Kantouri M. Synthesis, thermal analysis, and spectroscopic and structural characterizations of tetranuclear nickel(II) cubane-type clusters with 2-hydroxybenzaldehydes or 2-hydroxyphenones. in Journal of Thermal Analysis and Calorimetry. 2014;118(3):1431-1440.
doi:10.1007/s10973-014-4035-5 .

Zianna, Ariadni, Šumar-Ristović, Maja, Hatzidimitriou, Antonis, Papadopoulos, Christos D., Lalia-Kantouri, Maria, "Synthesis, thermal analysis, and spectroscopic and structural characterizations of tetranuclear nickel(II) cubane-type clusters with 2-hydroxybenzaldehydes or 2-hydroxyphenones" in Journal of Thermal Analysis and Calorimetry, 118, no. 3 (2014):1431-1440,
https://doi.org/10.1007/s10973-014-4035-5 . .