bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Site‐Specific Functionalization of Proteins by a Staudinger‐Type Reaction Using Unsymmetrical Phosphites.
Authors: Boehrsch Verena , Serwa Remigiusz , Majkut Paul , Krause Eberhard , Hackenberger Christian P. R. 
Published: September 2010

AbstractUnsymmetrical phosphites (II) and (V) react chemoselectively in a Staudinger reaction with p‐azido‐phenylalanine, which can be applied for the biotinylation of proteins, to afford the phosphoramidates (III) and (VI), respectively.
ChemInform Abstract: Design, Synthesis, Inhibitory Activity, and Binding Mode Study of Novel DNA Methyltransferase 1 Inhibitors.
Authors: Suzuki Takayoshi , Tanaka Rikako , Hamada Shohei , Nakagawa Hidehiko , Miyata Naoki 
Published: September 2010

AbstractA series of reaction products from maleic anhydrides and tryptophan is synthesized as novel non‐nucleoside DNA methyltransferase (DNMT) inhibitors.
ChemInform Abstract: Highly Chemo‐ and Stereoselective Glycosidation of Permethacrylated O‐Glycosyl Trichloroacetimidate Reagents Promoted by TMSNTf2.
Authors: Zandanel Christelle , Dehuyser Laure , Wagner Alain , Baati Rachid 
Published: September 2010

AbstractThe method affords generally the β‐isomers as main or exclusive products.
ChemInform Abstract: Novel Synthesis of the Isoflavone Genistein.
Authors: Denis Jeffrey D. St. , Gordon James S. IV , Carroll Vincent M. , Priefer Ronny 
Published: September 2010

AbstractA novel five‐step sequence for the synthesis of genistein (VIb) from ketone (Ia) involves formation of the enamino ketone (III) followed by ring closure and Suzuki coupling.
ChemInform Abstract: Enantioselective Synthesis of α‐Methylene‐β‐hydroxy Carboxylic Acid Derivatives via a Diastereoselective Aldol/β‐Elimination Sequence: Application to the C(15)—C(21) Fragment of Tedanolide C.
Authors: Barth Roland , Roush William R. 
Published: September 2010

AbstractA highly stereoselective synthesis of oxazolidinone‐protected α‐methylene‐β‐hydroxycarboxylic amides, e.g. (III), (VII) or (IX), is presented, involving the reaction of a chiral boron enolate [generated from phenylselenide (I)] with various aldehydes, followed by H2O2 oxidation.
ChemInform Abstract: The Meldrum′s Acid Route to Prodigiosin Analogues.
Authors: Hunter Gordon A. , McNab Hamish , Withell Kirsti 
Published: September 2010

AbstractA range of analogues where the pyrrole segments are replaced by thiophene parts is synthesized based on the hydroxy heterocycles (II), which are obtained by flash vacuum pyrrolysis of Meldrum′s acid derivatives (I).
ChemInform Abstract: anti‐Invasive and anti‐Angiogenic Activities of Naturally Occurring Dibenzodiazepine BU‐4664L and Its Derivatives.
Authors: Miyanaga Satoshi , Sakurai Hiroaki , Saiki Ikuo , Onaka Hiroyasu , Igarashi Yasuhiro 
Published: September 2010

AbstractStarting from naturally occurring dibenzodiazepine (Ia), derivatives (Ib), (Ic) and (II) are synthesized and evaluated for their antitumor and anti‐angiogenic activities.
ChemInform Abstract: Antiinfluenza Diarylheptanoids from the Bark of Alnus japonica
Authors: Nguyen Huu Tung , Kwon Hyuk‐Joon , Kim Jae‐Hong , Ra Jeong Chan , Ding Yan , Kim Jeong Ah , Kim Young Ho 
Published: September 2010

Abstractisolation, structure elucidation and antiviral activity of two new diarylheptanoids, oregonoyl A (Ia) and oregonoyl B (Ib) along with nine known compounds
ChemInform Abstract: Cyclic Diarylheptanoids as Na+‐Glucose Cotransporter (SGLT) Inhibitors from Acer nikoense.
Authors: Morita Hiroshi , Deguchi Jun , Motegi Yusuke , Sato Seizo , Aoyama Chihiro , Takeo Jiro , Shiro Motoo , Hirasawa Yusuke 
Published: September 2010

AbstractIsolation, structure determination and structure—activity relationships of two new diarylheptanoids, acerogenins A (Ia) and B (Ib), are described.
Product design of Disperse Raw Materials by Chemical Reactions
Authors: Rähse W. , Dicoi O. 
Published: September 2010

AbstractBei der Gewinnung und Veredelung von Stoffen aus natürlichen Ressourcen finden Umsetzungen zwischen gemahlenen Rohstoffen und fluiden Medien (Gase, Flüssigkeiten) statt. Ausgangsmaterialien sind mineralische und fossile Stoffe, wie Erze und Kohlen, sowie Nachwachsende Rohstoffe. In den Modellvorstellungen schrumpfen die Ausgangspartikel während der Reaktion. Das Design gebildeter Partikel hängt u. a. von der Qualität, weiteren Vorbehandlungen und den dispersen Eigenschaften der Rohstoffe ab. Läuft der Prozess über eine Schmelze, so kann das Produktdesign durch Reinigung, Zusätze und Formgebung eingestellt werden. Anderenfalls weisen Partikel aus pulvrigen, granularen oder fasrigen Ausgangsstoffen nach der Umsetzung zwar eine völlig andere Chemie auf, behalten aber weitgehend die Größe und Form des Ausgangsmaterials bei. Für ein weitergehendes Produktdesign sind nachgeschaltete Prozesse erforderlich.
Process Engineering Design of Evaporators
Authors: Scholl S. 
Published: September 2010

AbstractIn dieser Arbeit wird eine Methodik zum systematischen Design verfahrenstechnischer Apparate am Beispiel von Kolonnensumpfverdampfern vorgestellt. Der Designprozess umfasst die Schritte Apparatewahl, Apparategestaltung und Dimensionierung. Zur Apparatewahl wird als quantifizierendes Maß für die Übereinstimmung von Anforderungs‐ und Eigenschaftsprofil ein Eignungsgrad eingeführt. Die vorgestellte Methodik kann für Standardfälle des Apparatedesign unterstützen und so zur beschleunigten Prozessentwicklung beitragen.
Copper Winning from Metallurgical Slags
Authors: Maurell‐Lopez S. , Zander M. , Böhlke J. , Degel R. , Friedrich B. 
Published: September 2010

AbstractSchlacken können nicht länger als Abfallprodukt betrachtet werden, sind aber selten als Rohstoff werthaltiger Metalle anerkannt. Am Beispiel von Kupfer wird gezeigt, wie eine Abreicherung von Produktionsschlacken erfolgen kann. Durch eine verbesserte Einbringungsmethode von Reduktionsmitteln und eine magnetische Rührung der Schmelze mit einem verbesserten Absetzverhalten werden niedrigere Endgehalte in den Produktionsschlacken erzielt.
Ressource Effiency in Potash and Rock Salt Mining
Authors: Spachtholz F. X. 
Published: September 2010

AbstractDie Rohstoffwirtschaft ist für die Volkswirtschaft von essentieller Bedeutung. Der deutsche Bergbau gilt dank des Einsatzes modernster Technologien und Know how als äußerst ressourceneffizient. Die Gewinnungsbetriebe der K+S Gruppe bauen weltweit vor allem Kali‐ und Magnesiumsalze sowie Steinsalz ab. Dabei wird besonderer Wert auf eine nachhaltige Nutzung der Lagerstätten gelegt – nicht zuletzt um wettbewerbsfähig zu bleiben. Dazu werden ständig neue Technologien entwickelt, die Organisation optimiert und die Mitarbeiter weiterqualifiziert.
Studies on Ring‐Opening Polymerization of Chloromethyl Thiirane with Rare Earth Catalysts and Functional Resins Synthesized therewith
Authors: Shen Zhi‐Quan , Li Wei‐Shi , Sun Wei‐Lin , Zhang Yi‐Feng 
Published: September 2010

AbstractStudies on ring‐opening polymerization of chloromethyl thiirane with rare earth catalysts and functional resins synthesized therewith were reviewed.
A Novel Composite Electrode of Photocatalyst‐TiO2/C Loading on the Surface of the Air (Oxygen) Electrode
Authors: Wang Yu‐Ling , Cai Nai‐Cai , Wang Ya‐Ping , Zhong Jia‐Sheng 
Published: September 2010

AbstractThe methods for preparing the H2O2 generating air (oxygen) electrode and the composite electrode of photocatalyst‐TiO2/C loading on the surface of the air (oxygen) electrode were introduced. In the case of the composite electrode, the current efficiency of electro‐generated H2O2 is higher than 80% (J ≤ 15 mA/cm2). The degradation of aniline was used as an example to measure the influence of the composite electrode and compared with the system in which the air (oxygen) electrode and the photocatalyst‐TiO2 were separated. The results confirmed that the composite electrode played an active role on accelerating the degradation rate of aniline. According to the measurement of the polarization curves of composite electrode and TiO2 photo anode, and of the adsorbing amount of aniline on the surface of the composite electrode, the principle of descending the recombination rate of photo‐generated electron and hole and of enhancing the oxidation rate of organic molecule was described. The mechanism about the degradation of aniline was also discussed.
Vapor Pressure Osmometry and Its Applications in the Osmotic Coefficients Determination of the Aqueous Monomer Glycol and Polymer Polyethylene Glycol Solutions at Various Temperature
Authors: Gao Zuo‐Ntag , Li Jin‐Fu , Wen Xiao‐Lin 
Published: September 2010

AbstractBased on the principle and calibration of vapor pressure osmometer and its application in the thermodynamics of the aqueous solutions, the results on aqueous solutions of monomer glycol, PEG200, PEG400, PEG1500 and PEG2000, over the different concentration range at various temperatures were reported. Using a linear least‐square fitting routing, the osmotic coefficients were fitted by a simple polynomial equation. It was found that the relationship between the molar osmotic coefficients (ϕ) and the molar concentration (c) of the solutions are in a quite good agreement with the fitted polynomial equation at various temperatures over the different concentration range. The experimental results also show that over the studied concentration range and at various temperatures, the concentration dependence of the molar osmotic coefficients of the aqueous solution systems with the solutes of PEG200, PEG400, PEG1500 and PEG2000 are totally presented in a rising trend, and their temperature dependence of the osmotic coefficients of the aqueous solution systems of the molar concentration exhibits their own regularities, respectively. The aqueous glycol solution system exhibits the properties of the dilute solution.
Synthesis, Structural Characterization and Reactivity of Two New Triangular Molybdenum Cluster Compounds: Mo3Te7‐[S2CN(CH2CH2OH)2]3I and Mo3Te4Y3[S2P(iPrO)2]3I (Y3 = 1.43Te + 1.57S)
Authors: Yang Wen‐Bin , Lin Xiang , Lu Can‐Zhong , Zhuang Hong‐Hui 
Published: September 2010

AbstractTwo triangular molybdenum‐tellurium clusters, Mo3Te7‐[S2CN (CH2CH2OH2]3I (1) and Mo3Te4Y3[S2P(iPrO)2]3I (Y3 = 1. 43Te+ 1.57S) (2), were obtained from the reaction of K · HOdtc [HOdtc = S2CN(CH2CH2OH)2] or K·iPr2dtp (iPr2dtp = S2P[OCH(CH3)2]2) with a mixed product of elements Mo, Te(S) and I2 at high temperature. The structures of the two compounds were determined by X‐ray crystallography study. Crystal data are, (1): monoclinic, P21/n, a = 1.6256(3), b = 1.3264(2), c = 1.8808(4) nm, β=96.923°, V = 4.025.9 (14) nm3, Dcal = 3.050g·cm‐3, Z = 4, and (2): monoclinic, P21/n, a = 1.4564(2), b = 2.3917(4), c = 1.5094(3) nm, β = 114.35(2)°, V = 4.0259(14) nm3, Dcal = 2.449 g·cm−3 and Z = 4. Single crystal analyses show that 1 consists of discrete Mo3Te7[S2CN(CH2CH2OH)2]3I connected into three‐dimensional framework via hydrogen bonds, while 2 forms a linear chain via Te(S)—I interaction.
Layer‐by‐layer Multilayer Films Self‐assembled from a Rare‐earth‐containing Poly‐oxometalate Na9[Eu(W5O18)2] and Poly (allylamine hydrochloride) and Their Photoluminescent Properties
Authors: Wang Yong‐Hui , Wang Xin‐Long , Hu Chang‐Wen , Wang En‐Bo , Shi Chun‐Shan 
Published: September 2010

AbstractUltrathin multilayer films of a rare‐earth‐containing polyoxometalate Na9[Eu(W5O18)2] (EW) and poly(allylamine hydrochloride) (PAH) have been prepared by layer‐by‐layer self‐assembly from dilute aqueous solutions. The fabrication process of the EW/PAH multilayer films was followed by UV‐vis spectroscopy and ellipsometry, which show that the deposition process is linear and highly reproducible from layer to layer. An average EW/PAH bilayer thickness of ca. 2.1 nm was determined by ellipsometry. In addition, the scanning electron microscopy (SEM) image of the EW/PAH film indicates that the film surface is relatively uniform and smooth. The photoluminescent properties of these films were also investigated by fluorescence spectroscopy.
Crystal Structure and Luminescence of a Europium Coordination Polymer { [Eu(p‐MOBA)3 · 2H2O] · 0.5H2O · 0.5 (4, 4′‐bipy) } ∞
Authors: Li Xia , Jin Lin‐Pei , Wan Yong‐Hong , Lu Shao‐Zhe , Zhang Jia‐Hua 
Published: September 2010

AbstractThe structure of the complex { [Eu (p‐MOBA)3 · 2H2O] · 0.5H2O·0.5(4,4′‐bipy)}∞ (p‐MOBA: p‐methoxybenzoate, 4,4′‐bipy: 4,4′‐bipyridine) was determined by single crystal X‐ray diffraction study. Each europium atom is coordinated with two oxygen atoms of the chelated carboxyl group, four oxygen atoms of the four bidentate bridging carboxylate groups and two oxygen atoms of two water molecules, forming an infinite polymeric chain structure. Excitation and luminescence spectra were observed at 77 K. The high resolution spectrum of the complex shows that the europium ion site in the crystal has low symmetry. The complex displays intense luminescence which may be related to the p‐MOBA ligand and the polymeric coordination.
Microdetermination of Proteins by Enhanced Rayleigh Light Scattering Spectroscopy with Thorin
Authors: Zhao Feng‐Lin , Li Ke‐An , Chen Li‐Hua 
Published: September 2010

AbstractIn acidic solution, thorin (2‐(2‐hydroxy‐3.6‐disulfo‐1‐naphthyl)‐azo‐phenylarsenic acid sodium salt) can be bound with protein and aggregated to form large particle which displays a very strong rayleigh light scattering (RLS). The effects of pH, thorin concentration, detergent and ionic strength on binding reaction have been studied. The interference of coexisting substances was checked. The Scatchard plots for reaction between thorin and bovine serum albumin (BSA) were constructed and the association constant of thorin‐BSA was obtained, it is 5.26 × 105 L/mol, the maximum binding number is 7. RLS intensity is well proportional to the concentrations of 2.0–14.0 μg/ mL for human serum albumin (HSA), 1.8–14.7 μg/mL for BSA and 1.8–14.6 μg/mL for γ‐globulin (γ‐G). The detection limits (3ϱ) are 54.1 ng/mL for HSA, 52.0 ng/mL for BSA and 51.8 ng/mL for γ‐G, respectively. The relative standard deviation is 2.4% for BSA, 3.2% for HSA and 4.1% for γ‐G. The human serum samples were measured satisfactorily by using this method.
Cupric Hexacyanoferrate Nanoparticle Modified Carbon Ceramic Composite Electrodes
Authors: Wang Peng , Zhu Guo‐Yi 
Published: September 2010

AbstractGraphite powder‐supported cupric hexacyanoferrate (CuHCF) nanoparticles were dispersed into methyltrimethoxysilane‐based gels to produce a conducting carbon ceramic composite, which was used as electrode material to fabricate surface‐renewable CuHCF‐modified electrodes. Electrochemical behavior of the CuHCF‐modified carbon ceramic composite electrodes was characterized using cyclic and square‐wave voltammetry. Cyclic voltammograms at various scan rates indicated that peak currents were surface‐confined at low scan rates. In the presence of glutathione, a dear electrocatalytic response was observed at the CuHCF‐modified composite electrodes. In addition, the electrodes exhibited a distinct advantage of reproducible surface‐renewal by simple mechanical polishing on emery paper, as well as ease of preparation, and good chemical and mechanical stability in a flowing stream.
Rearrangement of 2‐Benzothiazolylthioacetyl Hydrazide in Ethanol Solution of Potassium Hydroxide: Synthesis of s‐Triazolo[3,4‐b]benzothiazol‐3‐thiol and Its Derivatives
Authors: Zhang Yan , Hui Xin‐Ping , Dai Chao‐Feng , Zhang Zi‐Yi , Xu Peng‐Fei 
Published: September 2010

AbstractA novel rearrangement reaction about 2‐benzothiazolyl‐thioacetyl hydrazide (1) to produce s‐triazolo[3,4‐b]benzothiazol‐3‐thiol (3) in the presence of KOH and CS2 was described. Other way to synthesize 3 from 2‐benzothiazolyl‐hydrazine (2) under the same condition was compared and the Mannich reaction of compound 3 was reported too. Their structures were established by elemental analyses, IR, 1H NMR and MS spectra.
Separation and Structure of Chiral S‐Malic Acid Hydrate
Authors: Me Jing‐Jing , Xu Duan‐Jun , Wu Jing‐Yun , Chiang Michael Y. 
Published: September 2010

AbstractCrystals of the chiral malic acid hydrate (C4H6O3 · H2O) were unexpectedly obtained from an ethanol/water solution containing racemic D, L‐malic acid and L‐asparagine. The crystal belongs to orthorhombic space group P212121 with cell dimensions of a = 0.5576(1), b = 0.9818(2), c = 1.1793(2) nm, V = 0.6455(2) nm3, Z = 4, μ(Mo Ka =0.152 mm−1, F(000) = 320, Dc= 1.565 g·cm−3, R = 0.051, wR = 0.136 for 657 observed reflections [I < 2σ(I)]. The significant difference in bond distances for carboxyl groups suggests that the crystal consist of malate anion and protonized crystalline water. This is a report for direct separation of racemic mixture, i.e., without the formation of a molecular complex of raceme with a chiral separating reagent.
New Host Molecules with Imidazoliums as Functional Arms: Syntheses and Anion Recognition
Authors: Yuan Yi , Jiang Zong‐Lin , Gao Ge , Zhang Guo‐Lin , You Jing‐Song , Xie Ru‐Gang 
Published: September 2010

AbstractThe bridged tri‐imidazoliums 3 · 3X− — 5 · 3X− (X− = PF6−, Br−, I−) and bis‐imidazoliums 6 × 2PF6− were synthesized by N‐quaternization of imidazole derivative 1 in acetonitrile under reflux. UV spectroscopic titration experiments showed that the halide salts and hexafluorophosphate salts of these imidazoliums exhibited good recognition toward anions in water and in acetonitrile, respectively.
Sequence Pattern Correlation of Amino Acid in Collision‐induced Dissociation Electrospray Ionization Mass Spectrometry
Authors: Song Hao‐Wei , Yue Gui‐Hua , Lu Yu , Yang Peng‐Yuan , Wang Hong‐Hai 
Published: September 2010

AbstractA novel approach of sequence pattern correlation has been applied to predict an expected amino acid sequence from CID ESI‐MS spectra. The proposed approach deduces sequence patterns with no help from known protein database such that it is useful to identify an unknown peptide or new protein. The algorithm applies a cross‐correlation to match an experimental CID spectrum with predicted sequence pattern generated from fragmentation information. The fragmentation knowledge of both y‐series and other non y‐series are utilized to generate the predicted sequence patterns. In contrast to the normal de novo approach, the proposed approach is insensitive to mass tolerance and non‐susceptive to spectral integrality with no need for selection of a starting point.
Synthesis and Characterization of Ferrocene‐Containing Liquid Crystalline Materials with a Bromo‐phenyl Moiety†
Authors: Zhao Ke‐Qing , Hu Ping , Xu Hong‐Bo , Zhang Liang‐Fu 
Published: September 2010

AbstractTen ferrocene‐containing liquid crystalline materials, p‐FcC6H4CO2C6H4N=CHC6H4O2CC6H3BrOCnH2n+1 (type I) and p‐FcC6H4N=CHC6H4O2CC6H3BrOCnH2n+1 (type II), were synthesized by condensation reactions of two ferrocene‐substituted amines, p‐FcC6H4CO2C6H4NH2 (4) and p‐FcC6H4NH2(5) (Fc: ferrocenyl) with five bromo‐substituted benzaldehydes (3) (H2n+1CnOC6H3BrCOOC6H4CHO, n=2, 4, 6, 8 and 10). Their mesogenic behaviors were studied by hot‐stage polarized optical microscopy and differential scanning calorimetry. The effects of structure (rigid core, terminal chain length) on the phase transition behaviors were discussed.
Synthesis and Novel Properties of Alkyl Thiophosphoramidate Derivatives of Nucleosides
Authors: Miao Zhl‐Wei , Fu Hua , Tu Guang‐Zhong , Liu Hai , Bo Han , Zhao Yu‐Fen 
Published: September 2010

AbstractNovel alkyl thiophosphoramidate derivatives of nucleoside analogues (5) have been prepared by phosphochloridothioate chemistry. O‐Isopropyl 2′, 3′‐O‐isopropylidene uridine‐5′‐yl N‐thiophosphoryl threonine and serine methyl esters (Sa and 5b) underwent the intramolecular catalyzed hydrolysis reaction.
Study and Application of Polarographic Catalytic Wave of Chlordiazepoxide in the Presence of Persulfate
Authors: Guo Wei , Lin Hong , Liu Li‐Min , Guo Zhi‐An , Song Jun‐Feng 
Published: September 2010

AbstractPolarographic catalytic wave of chlordiazepoxide in the presence of K2S2O8 was studied in aqueous and DMF/H2O mixed solutions. The results showed that a single reduction wave in alkaline medium was the reduction of the N = C bond in 1,2‐position of chlordiazepoxide via an intermediate free radical in two one‐electron successive additions. When K2S2O8 was present, the free radical of the N = C bond was oxidized to regenerate the original, producing a parallel catalytic wave of chlordiazepoxide. It was determined that the apparent rate constant kf of the oxidation reaction was 3.2 × 103 mol−1·L·s−1. Using the catalytic wave the trace of chlordiazepoxide can be determined by linear‐potential scan polarography. In NH3/NH4Cl (pH 10.2 ± 0.1, 0.12 mol/L)/K2S2O8(0.016 mol/L) supporting electrolyte, the second‐order derivative peak current of the catalytic wave was rectilinear to chlordiazepoxide concentration in the range of 3.20 × 10−8‐1.60 × 10−7, 1.60 × 10−7‐1.44×10−6 and 1.44×10−6‐1.44x 10−5 mol/L, respectively. The limit of detection was 9.0×10−9 mol/L.
Interaction of Fluorocarbon Containing Hydrophobically Modified Polyelectrolyte with Nonionic Surfactants
Authors: Guo Jin‐Feng , Zhuang Dong‐Qing , Zhou Hui , Zhang Yun‐Xiang 
Published: September 2010

AbstractThe interaction of fluorocarbon containing hydrophobically modified polyelectrolyte (FMPAANa) with two kinds of non‐ionic surfactants (hydrogenated and fluorinated) in a semidilute (0.5 wt%) aqueous solution had been studied by rheological measurements. Association behavior was found in both systems. The hydrophobic interaction of FMPAANa with fluorinated surfactant (FC171) is much stronger than that with hydrogenated surfactant (NP7.5) at low surfactant concentrations. The interaction is strengthened by surfactants being added for the density of active junctions increased. Whereas distinct phenomena for FC171 and NP7.5 start to be found as the surfactants added over their respective certain concentration. The interaction of polyelectrolyte with fluorinated surfactant increases dramatically while that with hydrogenated surfactant decreases.
A Novel Approach to Synthesis of α, β‐Unsaturated Ketones
Authors: Wang Lan‐Ying , Hu Zhi‐Biao , Shi Zhen 
Published: September 2010

AbstractA new approach to the synthesis of α, β‐unsaturated ketones from 1,2,3‐trimethyl benzimidazolium salt via the condensation reaction with aldehydes followed by the addition reaction of Grignard reagents with quaternary C=N bond was provided.
Synthesis and Structure of 1‐Cyclopentylindenyl Lanthanide(II) Complexes and Their Catalytic Behavior for Polymerization of Acrylonitrile
Authors: Qi Min‐Hua , Shen Qi , Gong Xin‐Qiang , Shen Zhi‐Quan , Weng Lin‐Hong 
Published: September 2010

AbstractThe reaction between K(1‐C5H9C9H6) and anhydrous LnCl3(Ln=Sm, Yb) in the molar ratio of 2:1 in THF with subsequent treatment by Na‐K alloy afforded (1‐C5H9C9H6)2Ln‐(THF)n(Ln=Sm,n=1; Ln=Yb,n=2), while the reaction of Sml2with K(1‐C5H9C9H6) in the molar ratio of 1:2 in THF gave the anionic complex K(1‐C5H9C9H6)3Sm(THF)3. The X‐ray structure of (1‐C5H9C9H6)2Yb(THF)2showed that central metal Yb is coordinated by two cyclopentadienyl rings of 1‐cyclopentylindenyls and two oxygen atoms from two tetrahydrofuran molecules to form pseudo‐tetrahedral coordinate geometry. All these complexes are active for the polymerization of acrylonitrile.
Effects of Samarium on the Properties of the Anodic Pb(II) Oxides Film Formed on Pb in Sulfuric Acid Solution
Authors: Liu Hou‐Tian , Yang Chun‐Xiao , Zhang Xin‐Hua , Zhou Yan‐Bao , Zhou Wei‐Fang 
Published: September 2010

AbstractThe effects of samarium on the properties of the anodic Pb(II) oxides films formed on lead at 0.9 V (vs. Hg/Hg2SO4) in 4.5 mol/L H2SO4 solution were studied using linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS) and scanning electron micrographs (SEM). The experimental results show that adding Sm to lead metal can inhibit the growth of the Pb(II) oxides film effectively, and reduce the resistance of the PbO oxides film obviously. The addition of Sm increases the porosity of the anodic film, which may cause the increase of the ionic conductance produced by the interstitial liquid among the PbO particles in the film and lead to the decrease of the resistance of the anodic film.