Browsing by Author "Kabanos, Themistoklis A."
Now showing items 1-20 of 33
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Beneficial effects of a vanadium complex with cysteine, administered at low doses on benzo(α) pyrene-induced leiomyosarcomas in wistar rats
Liasko, Roman; Kabanos, Themistoklis A.; Karkabounas, Spyridon Ch; Malamas, Michael Ph; Tasiopoulos, Anastasios J.; Stefanou, Dimitrios G.; Collery, P.; Evangelou, Angelos M. (1998)Background: Vanadium is a potent environmental and body metal, possessing remarkable antitumor and antidiabetic properties. Vanadium salts and complexes have been widely investigated for their anticarcinogenic properties ...
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Bis(hydroxylamino)triazines: High Selectivity and Hydrolytic Stability of Hydroxylamine-Based Ligands for Uranyl Compared to Vanadium(V) and Iron(III)
Hadjithoma, Sofia; Papanikolaou, Michael G.; Leontidis, Epameinondas; Kabanos, Themistoklis A.; Keramidas, Anastasios D. (2018)The development of ligands with high selectivity and affinity for uranium is critical in the extraction of uranium from human body, radioactive waste, and seawater. A scientific challenge is the improvement of the selectivity ...
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Cobalt(II), nickel(II) and zinc(II) coordination chemistry of the N,N′-disubstituted hydroxylamine-(diamido) ligand, 3,3′-(hydroxyazanediyl)dipropanamide
Papanikolaou, Michael G.; Hadjithoma, Sofia; Miras, Haralampos N.; Keramidas, Anastasios D.; Kabanos, Themistoklis A. (2018)Although directly relevant to metal mediated biological nitrification and the coordination chemistry of peroxide, the transition metal complexes of hydroxylamines and their functionalized variants remain mainly unexplored ...
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Design and Assembly of Covalently Functionalised Polyoxofluorovanadate Molecular Hybrids
Nicolaou, Maria; Papanikolaou, Michael G.; Tsipis, Athanassios C.; Kabanos, Themistoklis A.; Keramidas, Anastasios D.; Sproules, Stephen; Miras, Haralampos N. (2018)Abstract Mixed-valent polyoxometalate (POM) clusters are one of the most interesting host species, showing a wide range of structural features and properties. The facile preparation and functionalisation of a mixed-valent ...
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Donor atom electrochemical contribution to redox potentials of square pyramidal vanadyl complexes
Vlasiou, Manolis; Drouza, Chryssoula; Kabanos, Themistoklis A.; Keramidas, Anastasios D. (2015)A simple donor atom additivity relationship has been used to calculate the donor atom electrochemical contribution (DEC) of the Oac (acetylacetonate-enolic oxygen), OPh (phenolic oxygen), SPh (mercaptophenol sulfur), Nam ...
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Interaction of Chromium(III) with a N, N ′-disubstituted hydroxylamine-(diamido) ligand: A combined experimental and theoretical study
Tziouris, Petros A.; Tsiafoulis, Constantinos G.; Vlasiou, Manolis; Miras, Haralampos N.; Sigalas, Michael P.; Keramidas, Anastasios D.; Kabanos, Themistoklis A. (2014)Reaction of hydroxylamine hydrochloride with prop-2-enamide in dichloromethane in the presence of triethylamine resulted in the isolation of the N,N′-disubstituted hydroxylamine-(diamido) ligand, 3,3′-(hydroxyazanediyl)d ...
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Investigation of dioxygen activation by copper(II)–iminate/aminate complexes
Papanikolaou, Michael G.; Hadjithoma, Sofia; Chatzikypraiou, Dimitra S.; Papaioannou, Dionysios; Drouza, Chryssoula; Tsipis, Athanassios C.; Miras, Haralampos N.; Keramidas, Anastasios D.; Kabanos, Themistoklis A. (2018)The activation of dioxygen by metal ions is critical in chemical and bio-chemical processes. A scientific challenge is the elucidation of the activation site of dioxygen in some copper metalloproteins, which is either the ...
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Model Investigations for Vanadium-Protein Interactions. Synthetic, Structural, and Physical Studies of Vanadium(III) and Oxovanadium(IV/V) Complexes with Amidate Ligands
Keramidas, Anastasios D.; Papaioannou, Agelos B.; Vlahos, Antonis T.; Kabanos, Themistoklis A.; Bonas, George; Makriyannis, Alexandros M.; Raptopoulou, Catherine P.; Terzis, Aris (1996)3, C19H13N3O2SV, Mr = 398.34, monoclinic, P21/n, a = 12.1108(10) Å, b = 19.4439(18) Å, c = 7.2351(7) Å, β = 103.012(3)°, V = 1660.0(4) Å3, Z = 4, R = 0.0355, and Rw = 0.0376
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Model Investigations for Vanadium-Protein Interactions: Synthesis and X-ray Structures of mer-[VOCl3(Hpycan)] and [VOCl2(CH3CN)(Hpycan)] {Hpycan = N-(2-Nitrophenyl)pyridine-2-carboxamide)
Kabanos, Themistoklis A.; Keramidas, Anastasios D.; Papaioannou, Agelos B.; Terzis, Aris (1994)
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Model investigations for vanadium-protein interactions: Vanadium(III) compounds with dipeptides and their oxovanadium(IV) analogues
Tasiopoulos, Anastasios J.; Tolis, Evangelos I.; Tsangaris, John Michael; Evangelou, Angelos M.; Woollins, J. D.; Slawin, A. M. Z.; Pessoa, J. C.; Correia, I.; Kabanos, Themistoklis A. (2002)The reaction of VCl3 with 1,10-phenanthroline and a series of dipeptides (H2dip), having aliphatic as well as aromatic side chains, in methyl alcohol and in the presence of triethylamine affords vanadium(III) compounds of ...
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Model Studies of the Interaction of Vanadium(III) and Oxovanadium(IV/V) with the Carbonyl Amide Oxygen
Soulti, K. D.; Troganis, Anastassios N.; Papaioannou, Agelos B.; Kabanos, Themistoklis A.; Keramidas, Anastasios D.; Deligiannakis, Yiannis G.; Raptopoulou, Catherine P.; Terzis, Aris (1998)a = 12.668(5) Å, b = 8.084(3) Å, c = 17.222(6) Å, α = 108.148(12)°
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Models of oxovanadium(IV)-protein interactions: The first oxovanadium(IV) complexes with dipeptides
Tasiopoulos, Anastasios J.; Vlahos, Antonis T.; Keramidas, Anastasios D.; Kabanos, Themistoklis A.; Deligiannakis, Yiannis G.; Raptopoulou, Catherine P.; Terzis, Aris (1996)
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Molybdenum(VI) coordination chemistry of the N,N-disubstituted bis(hydroxylamido)-1,3,5-triazine ligand, H2bihyat. Water-assisted activation of the MoVI=O bond and reversible dimerization of cis-[MoVIO2(bihyat)] to [MoVI2O 4(bihyat)2(H2O)2]
Stylianou, Marios; Nikolakis, Vladimiros A.; Chilas, G. I.; Jakusch, T.; Vaimakis, T.; Kiss, Tamás; Sigalas, Michael P.; Keramidas, Anastasios D.; Kabanos, Themistoklis A. (2012)Reaction of the N,N-disubstituted bis(hydroxylamino) ligand 2,6-bis[hydroxy(methyl)amino]-4-morpholino-1,3,5-triazine (H2bihyat) with cis-[MoVIO2(acac)2] in tetrahydrofuran resulted in isolation of the mononuclear compound ...
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Monomeric compounds containing the cis-[V(=O)(OH)]+ core
Tolis, Evangelos I.; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Raptopoulou, Catherine P.; Terzis, Aris; Sigalas, Michael P.; Deligiannakis, Yiannis G.; Kabanos, Themistoklis A. (2002)HYSCORE with a vanadium core: Examples of monomeric metal compounds containing the cis-[M(=O)(OH)]n+ unit, namely the VIVO2+ complexes [VIVO(OH)(bipy)2]BF4 (1
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A new class of ferromagnetically-coupled mixed valence vanadium(IV/V) polyoxometalates
Manos, Manolis J.; Tasiopoulos, Anastasios J.; Tolis, Evangelos I.; Lalioti, N.; Woollins, J. D.; Slawin, A. M. Z.; Sigalas, Michael P.; Kabanos, Themistoklis A. (2003)Reaction of [VVIOCl2(thf)2] with a bidentate nitrogen-donor ligand (L: phen = 1,10-phenanthroline, 5-mephen = 5-methyl-1,10-phenanthroline, bipy = 2,2′-bipyridine, 5,5′-me2bipy = 5,5′-dimethyl-2,2′-bipy) in methyl alcohol, ...
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NMR and theoretical investigations on the structures and dynamics of octahedral bis(chelate)dichloro VIII compounds isolated by an unusual reduction of non-oxo VIV species
Rikkou, Maria P.; Manos, Manolis J.; Tolis, Evangelos I.; Sigalas, Michael P.; Kabanos, Themistoklis A.; Keramidas, Anastasios D. (2003)Reaction of the non-oxo VIV species [VIVCl2(LOO)2] [LOO = acetylacetonate (acac-) or benzoylacetonate (bzac-)] with a chelate nitrogen-donor ligand LNN in acetonitrile leads to the reduction of VIV to VIII and the formation ...
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Novel lipophilic amidate oxorhenium and oxotechnetium complexes as potential brain agents: Synthesis, characterization and biological evaluation
Papadopoulos, Minas S.; Nock, B.; Maina-Nock, Theodosia; Pirmettis, Ioannis C.; Raptopoulou, Catherine P.; Tasiopoulos, Anastasios J.; Troganis, Anastassios N.; Kabanos, Themistoklis A.; Terzis, Aris; Chiotellis, Efstratios (2001)Novel oxorhenium and oxotechnetium complexes based on the tetradentate 1-(2-hydroxybenzamido)-2-(pyridinecarboxamido)benzene, H3L, ligand have been synthesized and characterized herein. Thus, by reacting equimolar quantities ...
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Oxidovanadium(IV/V) complexes as new redox mediators in dye-sensitized solar cells: A combined experimental and theoretical study
Apostolopoulou, Andigoni; Vlasiou, Manolis; Tziouris, Petros A.; Tsiafoulis, Constantinos G.; Tsipis, Athanassios C.; Rehder, D.; Kabanos, Themistoklis A.; Keramidas, Anastasios D.; Stathatos, Elias (2015)Corrosiveness is one of the main drawbacks of using the iodide/triiodide redox couple in dye-sensitized solar cells (DSSCs). Alternative redox couples including transition metal complexes have been investigated where ...
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Oxovanadium(IV)-Amide Binding. Synthetic, Structural, and Physical Studies of {N-[2-(4-Oxopent-2-En-2-Ylamino)Phenyl]Pyridine-2-Carboxamido}Oxovanadium(IV) and {N-[2-(4-Phenyl-4-Oxobut-2-en-2-Ylamino)Phenyl]Pyridine-2-Carboxamido}Oxovanadium(IV)
Hanson, G.; Kabanos, Themistoklis A.; Keramidas, Anastasios D.; Mentzafos, D.; Terzis, Aris (1992)The complexes [VO(pycac)] and [VO(pycbac)] were prepared by the reaction of bis(pentane-2, 4-dionato)oxovanadium(IV) with either N-[2-(4-oxopent-2-en-2-ylamino)phenyl]pyridine-2-carboxamide (H2pycac) or 7V-[2-(4-phenylox ...
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Oxovanadium(IV)-sulfite compounds: Synthesis and structural and physical studies
Chilas, G. I.; Miras, Haralampos N.; Manos, Manolis J.; Woollins, J. D.; Slawin, A. M. Z.; Stylianou, Marios; Keramidas, Anastasios D.; Kabanos, Themistoklis A. (2005)Reaction of VIVOCl2 in strongly acidic aqueous solution with either (NH4)2SO3 or Na 2SO3 and Bu4NBr at ∼70 °C in the pH range 2.5-4.5 gives the clusters (NH4)2{[V 4IV)(μ4-O)2(μ3-OH) 2](VIVO)2(μ3-SO3) 4O4(H2O)2} and (n-Bu ...