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Identifier	000381420
Title	Σύνθεση, χαρακτηρισμός και μελέτη πολυπυρηνικών συμπλόκων του Νικελίου (II) και του Κοβαλτίου (II/III) με Οξιμάτο υποκαταστάτες
Alternative Title	Synthesis, Characterization and Properties of Polynuclear Ni(II) and Co(II/III) Complexes With Oximate Ligands
Author	Τσάναϊ, Άγγελος
Thesis advisor	Μήλιος, Κωνσταντίνος Ι.
Reviewer	Δημάδης, Κωνσταντίνος Τρικαλίτης, Παντελής
Abstract	In the present work we explored the coordination ability of the new indeno-quinoxaline oxime ligand in Nickel and Cobalt chemistry. In total, seven new complexes were synthesized and characterized: [Ni3(L)5(OAc)(MeOH)].2.6MeCN.0.7MeOH.0.2H2O (1.2.6MeCN.0.7MeOH .0.2H2O), [Ni6(L)6(OAc)4(OMe)2].1.5MeOH.1.3H2O (2.1.5MeOH.1.3H2O), [Ni5(L)6(OMe)2(OH)(H2O)2(MeOH)2](ClO4).8.8MeOH.1.4H2O (3. 8.8MeOH.1.4H2O), [Ni7(L)7(aib)4(OH)(MeCN)0.5(H2O)0.5](ClO4)2.4MeCN.0.25H2O (4.4MeCN.0.25H2O), [Ni8(L)8(aib)3(OMe)3](ClO4)2.0.75MeOH.4.2H2O (5.0.75MeOH.4.2H2O), [Co7(L)9O2OH(OAc)2CH3OH].3MeOH (6.3MeOH), [Co8(L)10(aib)2(MeO)2](ClO4)2 (7). These complexes were characterized by single-crystal X-ray crystallography, elemental analysis, dc magnetic susceptibility measurements under an applied dc field of 1000 G in the temperature range 5 – 300 K, solid-state electronic absorption spectra and thermogravimetric analyses. Complexes 1-7 were synthesized under solvothermal conditions. Furthermore complexes 1-5 contain NiII ions while complexes 6, 7 contain CoII and CoIII ions. For all 1, 2, 5, 7 complexes the metallic core describes a planar disk. Direct current magnetic susceptibility studies were performed on polycrystalline samples of 1-7 showing the presence of dominant antiferromagnetic interactions between the metal centers, while thermogravimetric analyses reveals that complex 5 is thermally very stable since a plateau is observed between 45 and 280 °C.
Language	Greek
Subject	Cobalt complexes
	Magnetic propeties
	Nickel complexes
	Optical properties
	Polynuclear complexes
	Thermal properties
	Transition metal complexes
Issue date	2013-11-15
Collection	School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
	Type of Work--Post-graduate theses
Permanent Link	https://elocus.lib.uoc.gr//dlib/5/b/2/metadata-dlib-1386915869-67037-28978.tkl
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