Browsing Τμήμα Χημείας / Department of Chemistry by Title
Now showing items 496-515 of 1302
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Heterometallic FeIII-CeIV complexes from the use of aliphatic aminoalcohol ligands
(2013)Six novel heteronuclear FeIII/CeIV clusters with the ligands 3-amino-1-propanol (Hap) and 2-(hydroxymethyl)piperidine (Hhmpip) [FeIII4CeIV6O8(L) 4((CH3)3CCO2)12(RCO 2)4] (R = CH3, L = ap-, 1
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Heterometallic MnIII4Ln2 (Ln = Dy, Gd, Tb) Cross-Shaped Clusters and Their Homometallic MnIII4MnII2 Analogues
(2017)The employment of di-2-pyridyl ketone, (py)2CO, in heterometallic Mn/4f and homometallic Mn cluster chemistry has yielded six MnIII4Ln2 and two MnIII4MnII2 structurally related clusters, namely, [Mn4Ln2O2{(py)2CO2}4(NO3) ...
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A hexameric [Mn III 18 Na6] wheel based on [Mn III 3 O]7+ sub-units
(2016)A novel hexameric [MnIII18Na6] wheel-like aggregate consisting of [MnIII3O] triangles is reported. It is the second highest nuclearity oxime-based Mn cluster, the largest member of the recently-developed family of molecular ...
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Hexanuclear complexes from the use of a series of amino-alcohol ligands in Fe chemistry
(2013)Eight novel FeIII6 clusters with the amino-alcohol ligands 3-amino-1-propanol (apH), N-hydroxyethylpiperidine (N-hepipH), 2-hydroxyethylpiperidine (2-hepipH), 2-aminobenzylalcohol (2-abzaH), N-hydroxyethylmorpholine ...
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Hexanuclear zinc(II) carboxylate complexes from the use of pyridine-2,6-dimethanol: Synthetic, structural and photoluminescence studies
(2013)The employment of pyridine-2,6-dimethanol (pdmH2) in zinc(II) carboxylate chemistry is reported. The syntheses, crystal structures, and spectroscopic characterization are described for the structurally similar cluster ...
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High nuclearity single-molecule magnets: A mixed-valence Mn26 cluster containing the di-2-pyridylketone diolate dianion
(2008)The employment of the dianion (dpkd2-) of the gem-diol form of di-2-pyridylketone (dpk) as a tetradentate chelate in manganese chemistry is reported, and the synthesis, crystal structure, and magnetochemical characterization ...
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High-molecular-weight symmetrical multiblock copolymers: Synthesis by RAFT polymerization and characterization
(2013)High-molecular-weight (MW) symmetrical multiblock copolymers, based on the hydrophobic monomers styrene (Sty) and methyl methacrylate (MMA), and the more polar monomer, 2-vinyl pyridine (2VPy), were prepared using stepwise ...
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High-nuclearity Ce/Mn and Th/Mn cluster chemistry: Preparation of complexes with [Ce4Mn10O10(OMe)6] 18+ and [Th6Mn10O22(OH) 2]18+ cores
(2007)The syntheses, structures, and magnetic properties are reported of the mixed-metal complexes [Ce4Mn10O10(OMe) 6(O2-CPh)16(NO3)2(MeOH) 2(H2O)2] (1) and [Th6Mn 10O22(OH)2(O2CPh) 16-(NO3)2(H2O)8] (2), which were both prepared ...
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Article
Highlighting the structure – directing capability of the functional groups of angular dicarboxylic ligands: New 2-dimensional Cu2+ MOFs from analogous synthetic routes
(Elsevier, 2021-09-01)The reaction of Cu(NO3)2·2.5H2O with the angular dicarboxylic ligands 4,4′-oxybis(benzoic acid) (H2OBA), or 4,4′-(hexafluoroisopropylidene)bis(benzoic acid)) (H2HFPBBA), or 4,4′-sulfonyldibenzoic acid (H2SDBA) in a ~1/2 ...
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A highly porous interpenetrated metal-organic framework from the use of a novel nanosized organic linker
(2011)The initial use of a novel elongated tricarboxylic acid H3hmpib in metal-organic framework (MOF) chemistry resulted in a [Zn4O(hmpib) 2] MOF (UCY-1) with pyrite topology. The compound displays a remarkably high internal ...
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HIV-1 integrase: From biology to chemotherapeuticsAAA
(2007)AIDS has claimed the lives of 25 million people worldwide, an additional 40 million people are HIV-infected and new cases are being diagnosed every year. Despite the fact that HAART has moved AIDS from the category of ...
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Hofmeister anion effects on surfactant self-assembly and the formation of mesoporous solids
(2002)Recent work on mesoporous silica formation using cationic and non-ionic templates has unveiled a large number of anion effects. Anions are seen to change the hydrolysis rates of the silicate precursors, affecting the surface ...
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Homometallic {Mn10} and heterometallic {Mn6Ca4} supertetrahedra exhibiting an unprecedented {MnIII9MnII} oxidation state level and heterometal ions distribution
(2018)Two novel decametallic clusters displaying a supertetrahedral structural core are discussed, a homometallic compound [MnIII9MnII(μ4-O)4(μ3-OMe)3(btH)3(ed)3(PhCO2)6]·6Η2Ο (1·6Η2Ο) (btH3 = (±)-1,2,4-butanetriol
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Hula-twist photoisomerization of a styrene derivative examined by argon-matrix-infrared-spectroscopic method
(2006)IR spectra of α-cyano- o -fluorocinnamonitrile, its vinyl deuterated analogue and the corresponding photoproducts were recorded under Ar matrix isolation conditions (13K). An analysis of the IR spectra, assisted by ...
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Hydrogen production by ethylene decomposition over Ni supported on novel carbon nanotubes and nanofibers
(2005)Ethylene decomposition over Ni supported on novel carbon nanotubes (CNT) and nanofibers under consecutive reaction/regeneration cycles to form CO-free hydrogen and carbon deposits have been investigated. The present work ...
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Hydrogen Surface Concentration Effect on the Temperature-Programmed Hydrogenation of Adsorbed Carbonaceous Species on an Iron/Alumina Catalyst
(1993)Temperature-programmed hydrogenation (TPH) of adsorbed carbonaceous species on metallic catalysts is a useful method to measure their numbers and reactivities. In the present paper it is shown that changes in the T.P.H ...
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Hydrophilic cationic star homopolymers based on a novel diethanol-n-methylamine dimethacrylate cross-linker for sirna transfection: Synthesis, characterization, and evaluation
(2011)Four cationic hydrophilic star homopolymers based on the novel hydrophilic, positively ionizable cross-linker bis(methacryloyloxyethyl)methylamine (BMEMA) were synthesized using sequential group transfer polymerization ...
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Hydrophilic olive cake extracts: Characterization by physicochemical properties and Cu(II) complexation
(2009)Disposed olive cake generates hydrophilic components that can be mobilized in the aquatic environment. This paper deals with the characterization of such components, isolated by alkaline extraction. It is shown that these ...
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Hydrophilic, cationic large-core star polymers and polymer networks: Synthesis and physicochemical characterization
(2008)Group transfer polymerization was used to prepare hydrophilic, cationic large-core star polymers (LCSPs) and networks of 2-(dimethylamino)ethyl methacrylate (DMAEMA) and ethylene glycol dimethacrylate (EGDMA) in a two-step ...