TY  - JOUR
AU  - Adejumo, Temiloluwa T.
AU  - Danopoulou, Marianna
AU  - Zorba, Leandros P.
AU  - Pevec, Andrej
AU  - Zlatar, Matija
AU  - Radanović, Dušanka D.
AU  - Savić, Milica
AU  - Gruden, Maja
AU  - Anđelković, Katarina K.
AU  - Turel, Iztok
AU  - Čobeljić, Božidar
AU  - Vougioukalakis, Georgios C.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6366
AB  - Two new Zn(II) complexes bearing tridentate hydrazone-based ligands with NNO or NNS donor atoms were synthesised and characterised by elemental analysis, infrared (IR) and nuclear magnetic resonance (NMR) spectroscopies, and single crystal X-ray diffraction methods. These complexes, together with four previously synthesised analogues, having hydrazone ligands with a NNO donor set of atoms, were successfully employed as catalysts in the ketone-amine-alkyne (KA2) coupling reaction, furnishing tetrasubstituted propargylamines, compounds with unique applications in organic chemistry. DFT calculations at the CAM-B3LYP/TZP level of theory were performed to elucidate the electronic structure of the investigated Zn(II) complexes, excellently correlating the structure of the complexes to their catalytic reactivity.
PB  - Wiley
T2  - European Journal of Inorganic Chemistry
T1  - Correlating Structure and KA2 Catalytic Activity of ZnII Hydrazone Complexes
VL  - 26
IS  - 33
SP  - e202300193
DO  - 10.1002/ejic.202300193
ER  - 

@article{
author = "Adejumo, Temiloluwa T. and Danopoulou, Marianna and Zorba, Leandros P. and Pevec, Andrej and Zlatar, Matija and Radanović, Dušanka D. and Savić, Milica and Gruden, Maja and Anđelković, Katarina K. and Turel, Iztok and Čobeljić, Božidar and Vougioukalakis, Georgios C.",
year = "2023",
abstract = "Two new Zn(II) complexes bearing tridentate hydrazone-based ligands with NNO or NNS donor atoms were synthesised and characterised by elemental analysis, infrared (IR) and nuclear magnetic resonance (NMR) spectroscopies, and single crystal X-ray diffraction methods. These complexes, together with four previously synthesised analogues, having hydrazone ligands with a NNO donor set of atoms, were successfully employed as catalysts in the ketone-amine-alkyne (KA2) coupling reaction, furnishing tetrasubstituted propargylamines, compounds with unique applications in organic chemistry. DFT calculations at the CAM-B3LYP/TZP level of theory were performed to elucidate the electronic structure of the investigated Zn(II) complexes, excellently correlating the structure of the complexes to their catalytic reactivity.",
publisher = "Wiley",
journal = "European Journal of Inorganic Chemistry",
title = "Correlating Structure and KA2 Catalytic Activity of ZnII Hydrazone Complexes",
volume = "26",
number = "33",
pages = "e202300193",
doi = "10.1002/ejic.202300193"
}

Adejumo, T. T., Danopoulou, M., Zorba, L. P., Pevec, A., Zlatar, M., Radanović, D. D., Savić, M., Gruden, M., Anđelković, K. K., Turel, I., Čobeljić, B.,& Vougioukalakis, G. C.. (2023). Correlating Structure and KA2 Catalytic Activity of ZnII Hydrazone Complexes. in European Journal of Inorganic Chemistry
Wiley., 26(33), e202300193.
https://doi.org/10.1002/ejic.202300193

Adejumo TT, Danopoulou M, Zorba LP, Pevec A, Zlatar M, Radanović DD, Savić M, Gruden M, Anđelković KK, Turel I, Čobeljić B, Vougioukalakis GC. Correlating Structure and KA2 Catalytic Activity of ZnII Hydrazone Complexes. in European Journal of Inorganic Chemistry. 2023;26(33):e202300193.
doi:10.1002/ejic.202300193 .

Adejumo, Temiloluwa T., Danopoulou, Marianna, Zorba, Leandros P., Pevec, Andrej, Zlatar, Matija, Radanović, Dušanka D., Savić, Milica, Gruden, Maja, Anđelković, Katarina K., Turel, Iztok, Čobeljić, Božidar, Vougioukalakis, Georgios C., "Correlating Structure and KA2 Catalytic Activity of ZnII Hydrazone Complexes" in European Journal of Inorganic Chemistry, 26, no. 33 (2023):e202300193,
https://doi.org/10.1002/ejic.202300193 . .

TY  - JOUR
AU  - Adejumo, Temiloluwa T.
AU  - TZOURAS, NIKOLAOS
AU  - Zorba, Leandros
AU  - Radanović, Dušanka D.
AU  - Pevec, Andrej
AU  - Grubišić, Sonja
AU  - Mitić, Dragana
AU  - Anđelković, Katarina K.
AU  - Vougioukalakis, Georgios
AU  - Čobeljić, Božidar
AU  - Turel, Iztok
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5691
AB  - Two new Zn(II) complexes with tridentate hydrazone-based ligands (condensation products of 2-acetylthiazole) were synthesized and characterized by infrared (IR) and nuclear magnetic resonance (NMR) spectroscopy and single crystal X-ray diffraction methods. The complexes 1, 2 and recently synthesized [ZnL3(NCS)2] (L3 = (E)-N,N,N-trimethyl-2-oxo-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethan-1-aminium) complex 3 were tested as potential catalysts for the ketone-amine-alkyne (KA2) coupling reaction. The gas-phase geometry optimization of newly synthesized and characterized Zn(II) complexes has been computed at the density functional theory (DFT)/B3LYP/6–31G level of theory, while the highest occupied molecular orbital and lowest unoccupied molecular orbital (HOMO and LUMO) energies were calculated within the time-dependent density functional theory (TD-DFT) at B3LYP/6-31G and B3LYP/6-311G(d,p) levels of theory. From the energies of frontier molecular orbitals (HOMO–LUMO), the reactivity descriptors, such as chemical potential (μ), hardness (η), softness (S), electronegativity (χ) and electrophilicity index (ω) have been calculated. The energetic behavior of the investigated compounds (1 and 2) has been examined in gas phase and solvent media using the polarizable continuum model. For comparison reasons, the same calculations have been performed for recently synthesized [ZnL3(NCS)2] complex 3. DFT results show that compound 1 has the smaller frontier orbital gap so, it is more polarizable and is associated with a higher chemical reactivity, low kinetic stability and is termed as soft molecule.
PB  - MDPI
T2  - Molecules
T1  - Synthesis, Characterization, Catalytic Activity, and DFT Calculations of Zn(II) Hydrazone Complexes
VL  - 25
IS  - 18
SP  - 4043
DO  - 10.3390/molecules25184043
ER  - 

@article{
author = "Adejumo, Temiloluwa T. and TZOURAS, NIKOLAOS and Zorba, Leandros and Radanović, Dušanka D. and Pevec, Andrej and Grubišić, Sonja and Mitić, Dragana and Anđelković, Katarina K. and Vougioukalakis, Georgios and Čobeljić, Božidar and Turel, Iztok",
year = "2020",
abstract = "Two new Zn(II) complexes with tridentate hydrazone-based ligands (condensation products of 2-acetylthiazole) were synthesized and characterized by infrared (IR) and nuclear magnetic resonance (NMR) spectroscopy and single crystal X-ray diffraction methods. The complexes 1, 2 and recently synthesized [ZnL3(NCS)2] (L3 = (E)-N,N,N-trimethyl-2-oxo-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethan-1-aminium) complex 3 were tested as potential catalysts for the ketone-amine-alkyne (KA2) coupling reaction. The gas-phase geometry optimization of newly synthesized and characterized Zn(II) complexes has been computed at the density functional theory (DFT)/B3LYP/6–31G level of theory, while the highest occupied molecular orbital and lowest unoccupied molecular orbital (HOMO and LUMO) energies were calculated within the time-dependent density functional theory (TD-DFT) at B3LYP/6-31G and B3LYP/6-311G(d,p) levels of theory. From the energies of frontier molecular orbitals (HOMO–LUMO), the reactivity descriptors, such as chemical potential (μ), hardness (η), softness (S), electronegativity (χ) and electrophilicity index (ω) have been calculated. The energetic behavior of the investigated compounds (1 and 2) has been examined in gas phase and solvent media using the polarizable continuum model. For comparison reasons, the same calculations have been performed for recently synthesized [ZnL3(NCS)2] complex 3. DFT results show that compound 1 has the smaller frontier orbital gap so, it is more polarizable and is associated with a higher chemical reactivity, low kinetic stability and is termed as soft molecule.",
publisher = "MDPI",
journal = "Molecules",
title = "Synthesis, Characterization, Catalytic Activity, and DFT Calculations of Zn(II) Hydrazone Complexes",
volume = "25",
number = "18",
pages = "4043",
doi = "10.3390/molecules25184043"
}

Adejumo, T. T., TZOURAS, N., Zorba, L., Radanović, D. D., Pevec, A., Grubišić, S., Mitić, D., Anđelković, K. K., Vougioukalakis, G., Čobeljić, B.,& Turel, I.. (2020). Synthesis, Characterization, Catalytic Activity, and DFT Calculations of Zn(II) Hydrazone Complexes. in Molecules
MDPI., 25(18), 4043.
https://doi.org/10.3390/molecules25184043

Adejumo TT, TZOURAS N, Zorba L, Radanović DD, Pevec A, Grubišić S, Mitić D, Anđelković KK, Vougioukalakis G, Čobeljić B, Turel I. Synthesis, Characterization, Catalytic Activity, and DFT Calculations of Zn(II) Hydrazone Complexes. in Molecules. 2020;25(18):4043.
doi:10.3390/molecules25184043 .

Adejumo, Temiloluwa T., TZOURAS, NIKOLAOS, Zorba, Leandros, Radanović, Dušanka D., Pevec, Andrej, Grubišić, Sonja, Mitić, Dragana, Anđelković, Katarina K., Vougioukalakis, Georgios, Čobeljić, Božidar, Turel, Iztok, "Synthesis, Characterization, Catalytic Activity, and DFT Calculations of Zn(II) Hydrazone Complexes" in Molecules, 25, no. 18 (2020):4043,
https://doi.org/10.3390/molecules25184043 . .