bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhancement of Electrogenerated Chemiluminescence and Radical Stability by Peripheral Multidonors on Alkynylpyrene Derivatives
Authors: Oh Jeong‐Wook , Lee Yeon Ok , Kim Tae Hyun , Ko Kyoung Chul , Lee Jin Yong , Kim Hasuck , Kim Jong Seung 
Published: November 2008

AbstractA very generous donor: The electrochemiluminescence (ECL) efficiency and radical stability of pyrene, a poor ECL luminophore, are markedly improved as the number of peripheral multidonor units increased in a series of compounds (see picture). Photophysical and electrochemical studies and theoretical calculations have contributed to the understanding of the ECL enhancement, which is a step forward in the development of new light‐emitting materials.magnified image
Cytokine gene polymorphisms as risk and severity factors for juvenile dermatomyositis
Authors: Mamyrova Gulnara , O'Hanlon Terrance P. , Sillers Laura , Malley Karen , James‐Newton Laura , Parks Christina G. , Cooper Glinda S. , Pandey Janardan P. , Miller Frederick W. , Rider Lisa G. 
Published: November 2008

AbstractObjectiveTo study tumor necrosis factor α (TNFα) and interleukin‐1 (IL‐1) cytokine polymorphisms as possible risk and protective factors, define their relative importance, and examine these as severity factors in patients with juvenile dermatomyositis (DM).MethodsTNFα and IL‐1 cytokine polymorphism and HLA typing were performed in 221 Caucasian patients with juvenile DM, and the results were compared with those in 203 ethnically matched healthy volunteers.ResultsThe genotypes TNFα −308AG (odds ratio [OR] 3.6), TNFα −238GG (OR 3.5), and IL‐1α +4845TT (OR 2.2) were risk factors, and TNFα −308GG (OR 0.26) as well as TNFα −238AG (OR 0.22) were protective, for the development of juvenile DM. Carriage of a single copy of the TNFα −308A (OR 3.8) or IL‐1β +3953T (OR 1.7) allele was a risk factor, and the TNFα −238A (OR 0.29) and IL‐1α +4845G (OR 0.46) alleles were protective, for juvenile DM. Random Forests classification analysis showed HLA–DRB1*03 and TNFα −308A to have the highest relative importance as risk factors for juvenile DM compared with the other alleles (Gini scores 100% and 90.7%, respectively). TNFα −308AA (OR 7.3) was a risk factor, and carriage of the TNFα −308G (OR 0.14) and IL‐1α −889T (OR 0.41) alleles was protective, for the development of calcinosis. TNFα −308AA (OR 7.0) was a possible risk factor, and carriage of the TNFα −308G allele (OR 0.14) was protective, for the development of ulcerations. None of the studied TNFα, IL‐1α, and IL‐1β polymorphisms were associated with the disease course, disease severity at the time of diagnosis, or the patient's sex.ConclusionTNFα and IL‐1 genetic polymorphisms contribute to the development of juvenile DM and may also be indicators of disease severity.
Phenylnannolones A–C: Biosynthesis of New Secondary Metabolites from the Myxobacterium Nannocystis exedens
Authors: Ohlendorf Birgit , Leyers Stefan , Krick Anja , Kehraus Stefan , Wiese Michael , König Gabriele M. 
Published: November 2008

AbstractMyxobacteria are gliding bacteria that belong to the δ‐Proteobacteria and are known for their unique biosynthetic capabilities. Among myxobacteria, Nannocystis spp. are most closely related to marine myxobacteria and their secondary metabolism has hardly been investigated. Phenylnannolones A (1), B (2) and C (3) were obtained from a culture of Nannocystis exedens that was isolated from the intertidal region of Crete. Compound 1 had inhibitory activity toward the ABCB1 gene product P‐glycoprotein and reversed daunorubicin resistance in cultured cancer cells. Phenylnannolone A has an unusual structural architecture; it is composed of an ethyl‐substituted polyene chain linked to a pyrone moiety on one side and to a phenyl ring on the other. The investigation of the biosynthesis with labelled precursors revealed acetate, butyrate and phenylalanine as building blocks for 1. The labelling pattern suggested novel biochemical reactions for the biosynthesis of the starter unit.
Hexa‐ and Dodecanuclear Polyoxomolybdate Cyclic Compounds: Application toward the Facile Synthesis of Nanoparticles and Film Electrodeposition
Authors: Dolbecq Anne , Compain Jean‐Daniel , Mialane Pierre , Marrot Jérôme , Sécheresse Francis , Keita Bineta , Holzle Luis Roberto Brudna , Miserque Frédéric , Nadjo Louis 
Published: November 2008

AbstractTwo new compounds based on O3PCH2PO34− ligands and {MoV2O4} dimeric units have been synthesized and structurally characterized. The dodecanuclear MoV polyoxomolybdate species in (NH4)18[(MoV2O4)6(OH)6(O3PCH2PO3)6]⋅33 H2O (1) is a cyclohexane‐like ring in a chair conformation with pseudo S6 symmetry. In the solid state, the wheels align side by side, thus delimiting large rectangular voids. The hexanuclear anion in Na8[(MoV2O4)3(O3PCH2PO3)3(CH3AsO3)]⋅ 19 H2O (2) has a triangular framework and encapsulates a methylarsenato ligand. 31P NMR spectroscopic analysis revealed the stability of 2 in various aqueous media, whereas the stability of 1 depends on the nature of the cations present in solution. It has been evidenced that the transformation of 1 into 2 occurs in the presence of CH3AsO32− ions. This behavior shows that 1 can be used as a new precursor for the synthesis of MoV/diphosphonate systems. The two complexes were very efficient both as reductants of Pt and Pd metallic salts and as capping agents for the resulting Pt0 and Pd0 nanoparticles. The size of the obtained nanoparticles depends both on the nature of the polyoxometalate (POM; i.e., 1 or 2) and on the [metallic salt]/[POM] ratio. In all cases, X‐ray photoelectron spectroscopy (XPS) measurements have revealed the presence of MoVI species that stabilize the nanoparticles and the absence of MoV moieties. Diffuse‐reflectance FTIR spectra of the Pt nanoparticles show that the capping MoVI POMs are identical for both systems and contain the diphosphonato ligand. The colloidal solutions do not show any precipitate and the nanoparticles remain well‐dispersed for several months. The electrochemical reduction of MoV species was studied for 2. Cyclic voltammetry alone and electrochemical quartz crystal microbalance coupled with cyclic voltammetry show the deposition of a film on the electrode surface during this reduction.
Comparative Analysis of Electron‐Density and Electron‐Localization Function for Dinuclear Manganese Complexes with Bridging Boron‐ and Carbon‐Centered Ligands
Authors: Götz Kathrin , Kaupp Martin , Braunschweig Holger , Stalke Dietmar 
Published: November 2008

AbstractBonding in borylene‐, carbene‐, and vinylidene‐bridged dinuclear manganese complexes [MnCp(CO)2]2X (X=B‐tBu, B=NMe2, CH2, CCH2) has been compared by analyses based on quantum theory of atoms in molecules (QTAIM), on the electron‐localization function (ELF), and by natural‐population analyses. All of the density functional theory based analyses agree on the absence of a significant direct MnMn bond in these complexes and confirm a dominance of delocalized bonding via the bridging ligand. Interestingly, however, the topology of both charge density and ELF related to the Mn‐bridge‐Mn bonding depend qualitatively on the chosen density functional (except for the methylene‐bridged complex, which exhibits only one three‐center‐bonding attractor both in −∇2ρand in ELF). While gradient‐corrected functionals provide a picture with localized two‐center XMn bonding, increasing exact‐exchange admixture in hybrid functionals concentrates charge below the bridging atom and suggests a three‐center bonding situation. For example, the bridging boron ligands may be described either as substituted boranes (e.g., at BLYP or BP86 levels) or as true bridging borylenes (e.g., at BHLYP level). This dependence on the theoretical level appears to derive from a bifurcation between two different bonding situations and is discussed in terms of charge transfer between X and Mn, and in the context of self‐interaction errors exhibited by popular functionals.
Passage from Stepwise to Concerted Dissociative Electron Transfer through Modulation of Electronic States Coupling
Authors: Costentin Cyrille , Donati Ludovic , Robert Marc 
Published: November 2008

AbstractReductive cleavage of the three cyanobenzyl chloride isomers in N,N‐dimethylformamide gives new insights into the factors that control the mechanism during dissociative electron transfer. Within the family of investigated compounds, electrochemical reduction leads to expulsion of the chloride ion. While electron transfer is concerted with breaking of the CCl bond and acts as the rate‐determining step in the case of both the ortho and para isomers, an intermediate anion radical is formed before rapid fragmentation in the case of the meta isomer. Such an unexpected mechanistic shift (all key thermodynamic parameters are very similar for the three chlorides) is interpreted in the framework of a modified version of the dissociative electron‐transfer model that includes electronic coupling effects between the diabatic states of the products. These effects appear to control the very existence of a transient species along the reaction pathway.
Vacuum‐UV Irradiation‐Based Formation of Methyl‐Si‐O‐Si Networks from Poly(1,1‐Dimethylsilazane‐co‐1‐methylsilazane)
Authors: Prager Lutz , Wennrich Luise , Heller Roswitha , Knolle Wolfgang , Naumov Sergej , Prager Andrea , Decker Daniel , Liebe Hubert , Buchmeiser Michael R. 
Published: November 2008

AbstractThe vacuum‐UV (VUV)‐induced conversion of commercially available poly(1,1‐dimethylsilazane‐co‐1‐methylsilazane) into methyl‐Si‐O‐Si networks was studied using UV sources at wavelengths around 172, 185, and 222 nm, respectively. Time‐of‐flight secondary ion mass spectroscopy (TOF‐SIMS), X‐ray photo electron spectroscopy (XPS), and Fourier transform infrared (FTIR) measurements, as well as kinetic investigations, were carried out to elucidate the degradation process. First‐order kinetics were found for the photolytically induced decomposition of the SiNH‐Si network, the subsequent formation of the methyl‐Si‐O‐Si network and the concomitant degradation of the SiCH3 bond, which were additionally independent of the photon energy above a threshold of about 5.5 eV (225 nm). The kinetics of these processes were, however, dependent on the dose actually absorbed by the layer and, in the case of Si‐O‐Si formation, additionally on the oxygen concentration. The release of ammonia and methane accompanied the conversion process. Quantum‐chemical calculations on methyl substituted cyclotetrasilazanes as model compounds substantiate the suggested reaction scheme. Layers <100 nm in thickness based on mixtures of poly(1,1‐dimethylsilazane‐co‐1‐methylsilazane) and perhydropolysilazane (PHPS) were coated onto polyethylene terephthalate (PET) foils by a continuous roll to roll process and cured by VUV irradiation by using wavelengths <200 nm and investigated for their O2 and water vapor‐barrier properties. It was found that the resulting layers displayed oxygen and water vapor transmission rates (OTR and WVTR, respectively) of <1 cm3 m−2 d−1 bar−1 and <4 g m−2 d−1, respectively.
ChemInform Abstract: Synthesis and Structural Investigation of a New Oxide Fluoride of Composition Ba2SnO2.5F3×xH2O (x ≈ 0.5).
Authors: Berry Frank J. , Moore Elaine , Mortimer Michael , Ren Xiaolin , Heap Richard , Slater Peter , Thomas Michael F. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Phase Relations in the K2W2O7—K2WO4 —KPO3—Bi2O3 System and Structure of K6.5Bi2.5W4P6O34.
Authors: Terebilenko K. V. , Zatovsky I. V. , Baumer V. N. , Ogorodnyk I. V. , Slobodyanik N. S. , Shishkin O. V. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The New Crystalline Mixed Valent Solids TlIn4Se5X (X: Cl, Br) and TlIn4S5Cl: Structure and Nanoscopic Defects Investigated by Combined Application of X‐Ray and HRTEM Studies.
Authors: Nickel V. , Reiner C. , Schlosser M. , Deiseroth H.‐J. , Kienle L. , Xhaxhiu K. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Structure and Oxide Anion Conductivity in Ln2(TO4)O (Ln: La, Nd; T: Ge, Si).
Authors: Leon‐Reina Laura , Porras‐Vazquez Jose M. , Losilla Enrique R. , Moreno‐Real Laureano , Aranda Miguel A. G. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Neutron Powder Diffraction Study of the Magnetic and Crystal Structures of SrFe2(PO4)2.
Authors: Belik Alexei A. , Huang Qingzhen , Takayama‐Muromachi Eiji , Lynn Jeffrey W. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Nanospherical Fe3BO6 Anode Material for Lithium‐Ion Battery by the Rheological Phase Reaction Method.
Authors: Shi Xixi , Chang Caixian , Xiang Jiangfeng , Xiao Yong , Yuan Liangjie , Sun Jutang 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Wet Chemical Synthesis and Photocatalytic Activity of Potassium Niobate K6Nb10.8O30 Powders.
Authors: Zhang Gaoke , Hu Yanjun , Ding Xinmiao , Zhou Jin , Xie Junwei 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Solvothermal Syntheses, and Characterization of [Ln(en)4(SbSe4)] (Ln: Ce, Pr) and [Ln(en)4]SbSe4×0.5en (Ln: Eu, Gd, Er, Tm, Tb): The Effect of Lanthanide Contraction of the Crystal Structures of Lanthanide Selenidoantimonates(V).
Authors: Jia Dingxian , Zhu Aimei , Jin Qinyan , Zhang Yong , Jiang Wenqing 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: New Germanates LnCrGeO5 (Ln: Nd—Er, Y): Synthesis, Structure, and Properties.
Authors: Shpanchenko Roman V. , Tsirlin Alexander A. , Kondakova Ekaterina S. , Antipov Evgeny V. , Bougerol Catherine , Hadermann Joke , van Tendeloo Gustaaf , Sakurai Hiroya , Takayama‐Muromachi Eiji 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Study of the Crystallographic and Magnetic Structure of DyFeMnO5: A New Ferrimagnetic Oxide.
Authors: Martinez‐Lope M. J. , Retuerto M. , Alonso J. A. , Pomjakushin V. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Novel N,N,P‐Tridentate Ligands for the Highly Enantioselective Copper‐Catalyzed 1,4‐Addition of Dialkylzincs to Enones.
Authors: Kawamura Kenjiro , Fukuzawa Hitomi , Hayashi Masahiko 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Easily Accessible C2‐Symmetric Chiral Bicyclo[3.3.0] Dienes as Ligands for Rhodium‐Catalyzed Asymmetric 1,4‐Addition.
Authors: Feng Chen‐Guo , Wang Zhi‐Qian , Tian Ping , Xu Ming‐Hua , Lin Guo‐Qiang 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Mild C—C Bond Cleavage in Cycloalkanes by the Action of New Lanthanide Catalysts LnCl3×3H2O×3(EtO)2AlOH.
Authors: Bulgakov R. G. , Karamzina D. S. , Kuleshov S. P. , Dzhemilev U. M. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chemoselective Oxidation of Alcohols by a H2O2—Pt Black System under Organic Solvent‐ and Halide‐Free Conditions.
Authors: Kon Yoshihiro , Yazawa Hideaki , Usui Yoko , Sato Kazuhiko 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Transfer Hydrogenation of C=O and C=N Bonds by Tethered RhIII Catalysts.
Authors: Matharu Daljit S. , Martins Jose E. D. , Wills Martin 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Electron‐Rich, Bicyclic Biaryl‐Like KITPHOS Monophosphines via [4 + 2] Cycloaddition Between 1‐Alkynylphosphine Oxides and Anthracene: Highly Efficient Ligands for Palladium‐Catalyzed C—N and C—C Bond Formation.
Authors: Doherty Simon , Knight Julian G. , Smyth Catherine H. , Jorgenson Graeme A. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Phosphotungstic Acid Catalyzed Amidation of Alcohols.
Authors: Wang Guan‐Wu , Shen Ye‐Bing , Wu Xue‐Liang 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Superparamagnetic Iron Oxide as an Efficient and Recoverable Catalyst for Rapid and Selective Trimethylsilyl Protection of Hydroxyl Groups.
Authors: Mojtahedi Mohammad M. , Abaee M. Saeed , Eghtedari Mohammad 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Magnesium Nitride as a Convenient Source of Ammonia: Preparation of Primary Amides.
Authors: Veitch Gemma E. , Bridgwood Katy L. , Ley Steven V. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Acid‐Catalyzed Dehydration of Hydroxy‐Substituted Perhydroindenyl(perhydronaphthyl)ethanones and Perhydroindene(perhydronaphthalene)carboxylates.
Authors: Morozova A. A. , Golikov A. G. , Kriven'ko A. P. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Pentafluorophenyl Carbonyl Compounds in the Reformatsky‐Type Reactions Promoted with Fe(CO)5‐Based Metal Complex Systems.
Authors: Terent'ev A. B. , Vasil'eva T. T. , Chahovskaya O. V. , Mysova N. E. , Hambardzumyan H. H. , Kochetkov K. A. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sulfur Ylide Mediated Three‐Component Aziridination and Epoxidation Reactions Using Vinyl Sulfonium Salts.
Authors: Kokotos Christoforos G. , McGarrigle Eoghan M. , Aggarwal Varinder K. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Facile Stereoselective Synthesis of Difunctionalized 1,3‐Dienes Containing Tin and Halogen via Hydrozirconation of (Z)‐3‐(Tributylstannyl)alk‐3‐en‐1‐ynes.
Authors: Cai Ming‐Zhong , Wang Yue , Wang Ping‐Ping 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.