Browsing Τμήμα Χημείας / Department of Chemistry by Title
Now showing items 456-475 of 1320
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A facile access to enantiomerically pure [60]fullerene bisadducts with the inherently chiral trans -3 addition pattern
(2011)The Bingel reaction between C60 and an enantiopure bismalonate tether equipped with two acetonide moieties led to the synthesis and successful column chromatographic isolation of the enantiomerically pure f,sC and f,sA ...
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Facile preparation of polysaccharide-coated capillaries using a room temperature ionic liquid for chiral separations
(2013)In this study, the dissolution of polysaccharides into an ionic liquid was investigated and applied as a coating onto the capillary walls of a fused-silica capillary in open-tubular CEC. The coating was evaluated by examining ...
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Factors Affecting Solution Properties of Vanadium(V) Compounds: X-ray Structure of β-cis-NH4[VO2(EDDA)]1
(1996)The solution properties of two isomeric forms of the V-EDDA complex (the symmetric α-cis and asymmetric β-cis) have been studied using multinuclear NMR spectroscopy. The isomerization constant of the aqueous equilibrium ...
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Factors that affect rescue time in urban search and rescue (USAR) operations
(2015)Recent structural collapses were studied in order to identify gaps in technology and to propose priorities in enhancing urban search and rescue (USAR) tools. The timelines of the events were examined with the scope of ...
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A family of 3D coordination polymers composed of Mn19 magnetic units
(2006)(Figure Presented) Singles networks: The use of 1,3-propanediol and of 2-methyl-1,3-propanediol in manganese carboxylate chemistry leads to two new 3D coordination polymers with an unprecedented Mn19 repeating unit. The ...
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Fast Screening of Whole Blood Samples and Pharmaceutical Compounds for Enantiorecognition of Free L-T3, L-T4, and D-T4
(2015)A fast screening method of whole blood was proposed for enantiorecognition of free L-T3, L-T4, and D-T4. Stochastic microsensors based on four inulins (IN, IQ, TEX, and HD) immobilized on diamond paste (DP) were used for ...
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Femtosecond pump-probe studies of chlorine dioxide photochemistry in water and acetonitrile
(1998)The reaction dynamics of chlorine dioxide (OClO) dissolved in water and acetonitrile are investigated using femtosecond pump-probe spectroscopy. The change in optical density following photoexcitation of OClO at 400 nm is ...
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Femtosecond UV pump/near-IR probe studies of the solvent-dependent excited-state decay dynamics of chlorine dioxide
(2001)The excited-state decay and geminate-recombination dynamics of chlorine dioxide (OClO) are investigated using UV pump/near-IR probe spectroscopy. Experiments are performed with 200-fs time resolution on OClO dissolved in ...
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Ferromagnetic interactions in a 1d alternating linear chain of π-stacked 1,3-diphenyl-7-(thien-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl radicals
(2012)X-ray studies show that 1,3-diphenyl-7-(thien-2-yl)-1,4-dihydro-1,2,4- benzotriazin-4-yl (6) adopts a distorted, slipped π-stacked structure of centrosymmetric dimers with alternate short and long interplanar distances ...
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Field-sweep-rate dependence of the coercive field of single-molecule magnets: A classical approach with applications to the quantum regime
(2005)A method, based on the Néel-Brown model of thermally activated magnetization reversal of a magnetic single-domain particle, is proposed to study the field-sweep-rate dependence of the coercive field of single-molecule ...
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Filling the gap between the quantum and classical worlds of nanoscale magnetism: Giant molecular aggregates based on paramagnetic 3d metal ions
(2016)In this review, aspects of the syntheses, structures and magnetic properties of giant 3d and 3d/4f paramagnetic metal clusters in moderate oxidation states are discussed. The term "giant clusters" is used herein to denote ...
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Fine Tuning the Hydrophobicity of a New Three-Dimensional Cu2+ MOF through Single Crystal Coordinating Ligand Exchange Transformations
(American Chemical Society, 2024-02-26)The synthesis, characterization, and single-crystal-to-single-crystal (SCSC) exchange reactions of a new 3D Cu2+ MOF based on 5-aminoisophthalic acid (H2AIP), [Cu6(μ3-ΟΗ)3(ΑΙΡ)4(HΑΙΡ)]n·6nDMF·nH2O - UCY-16·6nDMF·nH2O, are ...
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The first one-pot synthesis of a chiral pentakis-adduct of C60 utilising an opened-structure malonate tether
(2013)A pentakis-adduct of C60 with an incomplete octahedral addition pattern was synthesised via a one-pot procedure using a tether equipped with five malonate moieties. The five-fold Bingel cyclopropanation of C60 was completely ...
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A flexible Cd2+ metal organic framework with a unique (3,3,6)-connected topology, unprecedented secondary building units and single crystal to single crystal solvent exchange properties
(2012)A new flexible Cd2+ metal organic framework (MOF), denoted as UCY-3, which is the second example of a MOF with the ligand H3CIP [H3CIP = 5-(4-carboxybenzylideneamino)isophthalic acid], is reported. It shows a unique ...
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Flexible lanthanide MOFs as highly selective and reusable liquid MeOH sorbents
(2013)A series of new 3-D Ln3+ metal-organic frameworks (MOFs), which are based on the semi-rigid ligand H3CIP [H3CIP = 5-(4-carboxybenzylideneamino)isophthalic acid], [Ln2(CIP) 2(DMF)4-x(H2O)x] (Ln3+ = La3+, Ce3+, Pr3+, Sm3+, ...
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Fluoro substitution effects in the crystal packing of fluorobenzenes
(1992)In this paper the effect of fluoro substitution on the packing of the 2-benzyl-5-benzylidene- and 2,5-dibenzylidenecyclopentanone frameworks will be discussed. We chose the fluoro substituent because it has a much smaller ...