bluuebunny/crossref_metadata_2025_split huggingface dataset:
Carboxylation of Benzoic Acid Using Cyclodextrin as Catalyst
Authors: Hirai Hidefumi , Mihori Hisashi 
Published: May 2006

Abstract
Benzoic acid is found to undergo carboxylation by warming with carbon tetrachloride in aqueous alkali in the presence of copper powder with β-cyclodextrin as catalyst. The reaction under mild conditions gives terephthalic acid in good yield with high selectivity.
Preparation of Nonaqueous Dispersion of Colloidal Silver by Phase Transfer
Authors: Hirai Hidefumi , Aizawa Hotaka , Shiozaki Hyouya 
Published: May 2006

Abstract
Colloidal silver particles dispersed in water are found to be transferred into a nonaqueous liquid by the addition of sodium chloride to an emulsion of the nonaqueous liquid in the aqueous dispersion of colloidal silver with sodium oleate. The colloidal dispersions of silver in cyclohexane, n-hexane and benzene are prepared by phase transfer using sodium oleate and sodium chloride.
A Ketyl Radical Probe Experiment. The Reactions of o-Halobenzophenones with Various Wittig Reagents
Authors: Yamataka Hiroshi , Ando Katsuhiro , Takatsuka Tsutomu , Hanafusa Terukiyo 
Published: May 2006

Abstract
The ketyl radical probe experiments of o-, m-, or p-bromobenzophenone and iodobenzophenone with nonstabilized, semistabilized, and stabilized ylides in THF and [2H8]THF suggested the presence of radical anion species of sufficient lifetime in the reaction with a nonstabilized ylide.
Compositional Variation of Ionizable Crown Ether-Alkali Metal Ion Complexes in the Solvent Extraction Using Several Extraction Solvents
Authors: Sakamoto Hidefumi , Goto Hiroki , Doi Kunio , Otomo Makoto 
Published: May 2006

Abstract
Novel benzo-15-crown-5 and 18-crown-6 derivatives bearing an ionizable hydrazone group were synthesized and complex formation equilibria of the compounds with alkali metal ions in solvent extraction were evaluated spectrophotometrically. Formation of 2:2 complexes of the crown ethers with metal ions was observed using chloroform as an extraction solvent.
Synthesis and Structure of a Disulfido-Bridged Mixed-Valent Ru(II)Ru(III) Complex [{Ru(AN)3(TMP)2}2(μ-S2)](PF6)3 (AN = acetonitrile, TMP = P(OMe)3)
Authors: Matsumoto Takaya , Matsumoto Kazuko 
Published: May 2006

Abstract
The first structural analysis of a S22−-bridged Ru(II)Ru(III) compound is reported. The compound was isolated from an acetonitrile solution of [{RuCl(TMP)2}2(μ-Cl)2(μ-S2)] with the addition of NaPF6. The two Ru atoms are equivalent and are bridged by a S22− ligand in trans positions.
Electron-Transfer Quenching and Thermal Backward Electron-Transfer Reactions of Zinc Myoglobin Controlled by Conformational Change
Authors: Tsukahara Keiichi , Okada Mihoko 
Published: May 2006

Abstract
Both photoinduced electron-transfer and thermal backward electron-transfer reactions of zinc myoglobin with cationic quenchers were bimolecular steps and the reaction rates were insensitive to the driving force of reactions, suggesting that the reactions are controlled by conformational changes of zinc myoglobin.
A New Method for Functionalization of Si-Si Bond-Containing Polymers by Insertion of Acetylenes into Polymer Backbones
Authors: Yamashita Hiroshi , Tanaka Masato 
Published: May 2006

Abstract
Partial insertion of functionalized acetylenes RC≡CH (R = 4-Me2NC6H4, 4-pyridyl, Me3SiOCH2) into Si-Si bonds of a poly[p-(disilanylene)phenylene] (1) and poly(methylpropylsilylene) smoothly proceeded by Pd(dba)2-2P(OCH2)3CEt (dba = dibenzylideneacetone) catalyst. A modified polymer of 1 with a (4-dimethylaminophenyl)vinylene group showed higher conductivity than 1 when doped with iodine.
Preparation of Poly(2,5-selenophenediyl-vinylene) Film by Sulfonium Salt Method
Authors: Iwatsuki Shouji , Kubo Masataka , Kamei Nobuaki 
Published: May 2006

Abstract
Soluble poly(2,5-selenophenediyl-methoxyethylene) was prepared by the reaction of (2,5-selenophenediyl dimethylene) bis(dimethylsulfonium bromide) with a base in a mixture of methanol and water. Its cast film was heated at 200 °C under nitrogen to obtain poly(2,5-selenophenediyl-vinylene) film.
Recovery of Rare Metals from the Sludge of Samarium-Cobalt Magnetic Alloy by a Chemical Vapor Transporting Method
Authors: Murase Kuniaki , Machida Ken-ichi , Adachi Gin-ya 
Published: May 2006

Abstract
A dry process using chemical vapor transporting technique along temperature gradient was investigated for the recovery and recycling of rare metals from the sludge of Sm-Co binary alloys. For the permanent magnetic alloy sludge of Sm2Co17, the Sm and Co elements were effectively separated in the form of anhydrous chlorides with the purity higher than 99%.
Synthesis, Structure, and Reactions of a 10-Sb-4 Type Antimony Ate Complex
Authors: Akiba Kin-ya , Nakata Hisashi , Yamamoto Yohsuke , Kojima Satoshi 
Published: May 2006

Abstract
A 10-Sb-4 type organoantimony ate complex was prepared from hexafluorocumyl alcohol and SbCl3 as an air and water stable compound. Its X-ray structural analysis revealed a distorted pseudo-trigonal bipyamidal structure. The compound reacted with both alkyl halides and organolithium reagents to yield neutral 10-Sb-5 compounds.
Synthesis, Structure, and Reactions of 10-Sn-5 Organotin Ate Complexes
Authors: Akiba Kin-ya , Ito Yasushi , Kondo Fumihiro , Ohashi Noriko , Sakaguchi Akira , Kojima Satoshi , Yamamoto Yohsuke 
Published: May 2006

Abstract
Stable anionic 10-Sn-51) species, tetraalkylammonium bis[α,α-bis(trifluoromethyl)benzenemethanolato(2−)-C2,O]alkylstannates(1−) [2a (R = Ph), 2b (R = p-CH3C6H4), 2c (R = n-Bu), and 2d (R = Me)], were prepared. Reaction of 2a and 2b with sulfuryl chloride gave chlorostannate (3a), which could be converted to fluorostannate (3b). 3a and 3b reacted with organolithium reagents to give 2. The X-ray crystallographic analysis of 3b-n-Bu4N+ revealed a distorted trigonal bipyramidal structure.
Benzene or Naphthalene Ring-fused Mono-Substituted Type Tetraazaoctaphenylporphyrin Zinc Complexes
Authors: Kobayashi Nagao , Ashida Tohru , Hiroya Kou , Osa Tetsuo 
Published: May 2006

Abstract
A zinc tetraazaoctaphenylporphyrin (ZnTAP) and benzene or naphthalene ring-fused unsymmetrcal ZnTAPs are synthesized and characterized by UV-visible absorption, emission, excitation, and magnetic circular dichroism (MCD) spectroscopy together with cyclic and differential pulse voltammetry. With lowering of the molecular symmetry, both the energy differences, between the Soret and Q bands and the splitting of the Q0-0 band increase while the quantum yield (φF) of the fluorescence decreases.
Ferromagnetically Coupled Dimanganese(III) Complex and Antiferromagnetically Coupled Diiron(III) Complex with Unsymmetrical Ligands
Authors: Mikuriya Masahiro , Yamato Yo , Tokii Tadashi 
Published: May 2006

Abstract
Binuclear iron(III) and manganese(III) complexes with 1-salicylideneamino-3-salicylamino-2-propanol (H3L), [Mn2(L)2]·2CH3CN and [Fe2(L)2]·2CH3CN, have been prepared and characterized by X-ray structure analysis and magnetic susceptibilities (80–300 K).
Synthesis of Oxazepinones from Vinyloxiranes and Chlorosulfonyl Isocyanate
Authors: Daniel Joseph , Shukla Deepti , Dhar Durga Nath 
Published: May 2006

Abstract
A facile synthesis of oxazepinone derivatives is reported by the interaction of vinyloxiranes and chlorosulfonyl isocyanate. A 1,5 to 1,7-dipolar rearrangement of the initially formed adduct, followed by ring closure is proposed.
Synthesis and Structural Analysis of Three-bridged [2.2.n](1,2,4)- and [4.4.n](1,2,4)-Cyclophanes
Authors: Okada Yukihiro , Ishii Fuyuhiko , Akiyama Isao , Nishimura Jun 
Published: May 2006

Abstract
Three-bridged [2.2.n](1,2,4)cyclophanes 4a and b were obtained by [2+2] photocycloaddition of divinylmetacyclophanes in 21 and 86% yields, respectively. Birch reduction of cyclophanes 4a and b gave [4.4.n](1,2,4)cyclophanes in 45–61% yields.
Heterocyclic o-Quinones. Mediator for Electrochemical Oxidation of NADH
Authors: Itoh Shinobu , Fukushima Hajime , Komatsu Mitsuo , Ohshiro Yoshiki 
Published: May 2006

Abstract
Heterocyclic o-quinones such as phenanthrolinequinone derivatives are demonstrated to act as a mediator in electrochemical oxidation of NADH, which can be used as an NAD+-recycling system for HLADH-catalyzed oxidation of alcohols.
Synthesis of the C- and D-Ring System of Hemibrevetoxin-B
Authors: Feng Fei , Murai Akio 
Published: May 2006

Abstract
The C- and D-ring system of hemibrevetoxin-B, which has been isolated from the red tide organism, Gymnodinium breve, has been synthesized in a racemic form on the basis of our new methodology involving the general conversion of medium sized lactone into the corresponding cyclic ether.
Oxidative Dimerization of Lithium-Enolates of Esters Promoted by TitaniumTetrachloride
Authors: Ojima Iwao , Brandstadter Stephan M , Donovan Robert J 
Published: May 2006

Abstract
Oxidative dimerization of lithium ester enoalates is effectively promoted by TiCl4, which serves as a new and efficient synthetic method. Mechanistic study indicates that the reaction proceeds via a radical-like mechanism, but it is not a free radical process.
Reaction of Tetrachalcogenastannolanes with Triphenylphosphine. A Novel Mode of Generation for Overcrowded Stannanethiones and Stannaneselones
Authors: Tokitoh Norihiro , Matsuhashi Yasusuke , Goto Midori , Okazaki Renji 
Published: May 2006

Abstract
Dechalcogenation of overcrowded 1,2,3,4,5-tetrachalcogenastannolanes with triphenylphosphine resulted in the formation of the corresponding 1,3,2,4-dichalcogenadistannetanes via [2+2]cycloaddition of intermediary stannanethione and stannaneselone. Molecular structures of the newly obtained 1,3,2,4-dichalcogenadistannetanes were examined by X-ray analysis.
1,2,3,4,5,6,7,8-Octathionane, a Novel Cyclic Polysulfide. Synthesis and Crystal Structure
Authors: Tokitoh Norihiro , Takeda Nobuhiro , Imakubo Tatsuro , Goto Midori , Okazaki Renji 
Published: May 2006

Abstract
Thermal reaction of a sterically bulky diazomethane with elemental sulfur in benzene afforded a novel cyclic polysulfide, 1,2,3,4,5,6,7,8-octathionane (1). Molecular structure of 1 was determined by X-ray crystallographic analysis and the geometry of its CS8 ring of 1 was compared with that of the theoretically optimized cyclononasulfur (S9).
Synthesis and Unusual Photochemical Reaction of Highly Congested 2,4,6-Tri-t-butylstyrene Episulfides
Authors: Kawashima Takayuki , Watanabe Soichiro , Okazaki Renji 
Published: May 2006

Abstract
Title compounds were synthesized by the reaction of 2,4,6-tri-t-butylthiobenzaldehyde with some diazomethanes. The photolysis of the most sterically congested episulfide obtained from t-Bu2CN2 gave an unusual product resulting from 1,2-migration of t-butyl group instead of the corresponding styrene, a normal photo-product, the corresponding styrene, together with Dewar benzene and benzothiophene derivatives.
The Phospha-Cope Rearrangement of 3-Phospha-1,5-hexadiene Derivatives Bearing a Hydroxyl Group
Authors: Kawashima Takayuki , Park Dae Jong , Murata Shinobu , Okazaki Renji , Inamoto Naoki 
Published: May 2006

Abstract
The title phospha-Cope rearrangement gives the corresponding cyclic phosphonates or phosphinates in 30 to 100% yields. Studies on solvent effects and kinetic isotope effects using the deuterated derivatives strongly support that there is a preequilibrium between tetracoordinate and pentacoordinate structures, followed by the rate determining phospha-Cope rearrangement.
Enantioselective Oxidation of Sulfinic Acid Esters with the Aid of a Microorganism
Authors: Kawasaki Takayasu , Watanabe Naoyuki , Sugai Takeshi , Ohta Hiromichi 
Published: May 2006

Abstract
Incubation of racemic arenesulfinic acid esters with a bacterial strain gave the corresponding sulfonates leaving behind optically active sulfinates via enantioselective oxidation. The substrates having longer alkyl chains as alcohol component were smoothly oxidized, and electron donating substituents on aromatic ring accelerated the reaction.
Entrapment of Glucose Oxidase in Silica Gel by the Sol-Gel Method and Its Application to Glucose Sensor
Authors: Tatsu Yoshiro , Yamashita Keishi , Yamaguchi Muneaki , Yamamura Soichiro , Yamamoto Hitoshi , Yoshikawa Susumu 
Published: May 2006

Abstract
The polymerization of tetraethyl silicate in the presence of glucose oxidase gave the silica gel with the enzymatic activity. As raising the aging temperature, the yield increased but the activity decreased. The flow injection-sensor constructed with the oxygen electrode covered by glucose oxidase-entrapped silica gel responded to glucose of physiological concentration.
Determination of CMC Based on Measurement of Liquid Junction Potential
Authors: Yamauchi Akira , Inoue Minako 
Published: May 2006

Abstract
A novel method for the determination of the critical concentration of a micelle formation (hereafter designated as CMC) based on the measurement of liquid junction potential was proposed in this study. In addition, the transport numbers of surfactant ions which express the dynamic behavior in surfactant solution were estimated.
Tautomerizaton of 2-Carboxy-1,3-dibenzo[a,c]tropolone in the Solid State. Possibility of a Symmetrical Structure of the Enol Form
Authors: Mochida Tomoyuki , Shinagawa Hideyuki , Izuoka Akira , Sugawara Tadashi 
Published: May 2006

Abstract
Crystal structure of 2-Carboxy-1,3-dibenzo[a,c]tropolone (4) is characterized by intramolecular hydrogen bonds with d(O···O) of 2.400(5) Å, which is one of the shortest distances reported for 3-hydroxyenones. An averaged structure of 4 suggested by solid state 13C (CP/MAS) NMR may be attributed to a genuine symmetry rather than a dynamically averaged one. Namely, the tautomer may have a symmetric structure resulting from the extremely short O···O distance.
Magnetic Property of 1,3,5-Tris(4′,4′,5′,5′-tetramethylimidazolin-2′-yl)benzene 3′,3′′,3′′′-Trioxide 1′,1′′,1′′′-Trioxyl in 1 : 1 Mixed Crystals with 1,3,5-Trinitrobenzene
Authors: Izuoka Akira , Fukada Masanori , Sugawara Tadashi , Sakai Masahiro , Bandow Shunji 
Published: May 2006

Abstract
Temperature dependence of magnetic susceptibility of 1,3,5-tris(4′,4′,5′,5′-tetramethylimidazolin-2′-yl)benzene 3′,3′′,3′′′-trioxide 1′,1′′,1′′′-trioxyl was measured by a Faraday type magnetic balance on a neat sample and on mixed crystals with 1,3,5-trinitrobenzene (1:1). While the triradical in a powdered sample behaves like three monoradicals (3 × S = 1/2) following the Curie-Weiss law (θ = −14 K), the intramolecular ferromagnetic coupling (J/kB = 23 K) becomes detectable in the mixed crystals.
Synthesis of Deeply Colored Soluble Polyacetylenes from 1-Ethynylnaphthalene and 3,6-Dibutyl-9-ethynylphenanthrene
Authors: Yamaguchi Masahiko , Hirama Masahiro , Nishihara Hiroshi 
Published: May 2006

Abstract
Deeply colored soluble polyacetylenes were synthesized from 1-ethynylnaphthalene and 3,6-dibutyl-9-ethynylphenanthrene by employing a tungsten (IV) catalyst. Since 2-ethynylnaphthalene gave the less conjugated polymer, connection mode of the aromatic pendants was found to be essential for maintaining the conjugated structure of the polyene chain. Electrochromic properties of poly(1-ethynylnaphthalene) were also studied.
Promotive Effects of the Addition of Alkaline Earth Metals to Ce-ZSM-5 Catalyst for the Reduction of Nitrogen Monoxide in the Presence of Propene and Oxygen
Authors: Yokoyama Chikafumi , Misono Makoto 
Published: May 2006

Abstract
The addition of alkaline earth metals to Ce-exchanged ZSM-5 enhanced remarkably the catalytic activity for the removal of nitrogen monoxide (1000 ppm) in the presence of propene (500 ppm) and oxygen (2%). The activity was great even at the space velocity of 105 h−1.
A Facile Preparative Method of C-Nucleosides
Authors: Togo Hideo , Ishigami Sachiko , Yokoyama Masataka 
Published: May 2006

Abstract
Facile and general preparative method of C-nucleosides has been achieved via 4 steps starting from 2-deoxy-D-ribose. The essential step in this method is the use of radical coupling reaction of 2-deoxy-D-ribofuranosyl radical derivative and some heteroaromatic bases.
Alkylation of Heteroaromatic Bases with Diphenylselenium Diacyloxylate
Authors: Togo Hideo , Miyagawa Nobukazu , Yokoyama Masataka 
Published: May 2006

Abstract
Heteroaromatic bases were alkylated with selenuranes, which were formed by the reaction of diphenylselenoxide and carboxylic anhydrides, under photoirradiation conditions. This reaction was presumed to proceed via a radical pathway accompanying decarboxylation.
Polypeptide Formation from Asparagine-Containing Dipeptides in Aqueous Solution upon Heating
Authors: Munegumi Toratane , Suzuki Naoko , Tanikawa Naoya , Harada Kaoru 
Published: May 2006

Abstract
Heating the aqueous solutions of asparagine-containing dipeptides in which asparagine locates at their C-terminal gave sequential polypeptides having the molecular weight up to 3000–5000.
A Remarkable Sensitivity of CaO-loaded In2O3 Element to CO2 Gas in the Presence of Water Vapor
Authors: Mizuno Noritaka , Kato Kazuyoshi , Yoshioka Tetsunori , Iwamoto Masakazu 
Published: May 2006

Abstract
The In2O3 element modified by 5.5 wt% CaO showed the sensitivities (the ratio of resistance of the element in air containing no CO2 to that in a diluent CO2 gas) to 2080 ppm CO2 as high as 12.9, 9.9, and 6.6 in the presence of 0, 1.1, and 1.8 vol% water vapor, respectively.
pH-Responsive Molecular Recognition by a Water-soluble Cyclophane Bearing l-Aspartate Moieties
Authors: Kikuchi Jun-ichi , Egami Kazuko , Suehiro Kazuaki , Murakami Yukito 
Published: May 2006

Abstract
A novel water-soluble cyclophane host bearing four pH-sensitive tentacles was prepared from 1,6,20,25-tetraaza[6.1.6.1]paracyclophane and l-aspartic acid. The host was found to exist primarily as tetracationic and tetraanionic species in pH ranges below 1 and above 11, respectively, and to exhibit pH-responsive molecular recognition toward various aromatic guests.
The X-Ray Crystal Structure of a Charge-transfer Complex Derived from a Non-planar, Bulky, and Conformationally Flexible Donor Compound
Authors: Hayashi Naoto , Mazaki Yasuhiro , Kobayashi Keiji 
Published: May 2006

Abstract
Bis(9-hydroxyfluorenyl)-substituted dithienothiophene afforded a crystalline charge-transfer complex with 2,3-dichloro-5,6-dicyanobenzoquinone. The crystal structure was revealed by an X-ray analysis to be composed of a cage-like dimeric unit of the donor molecules which are alligned in a segregated columnar stack.
Monohalogenation of Zirconacyclopentane Complexes via Alkylalkoxyzirconocene
Authors: Takahashi Tamotsu , Aoyagi Koichiro , Hara Ryuichiro , Suzuki Noriyuki 
Published: May 2006

Abstract
Treatment of trans-3,4-diethylzirconacyclopentane complex, which was a selective butene-butene coupling product on zirconium, with methanol followed by bromine gave selectively monobromination product, 2-ethyl-3-methyl-1-bromopentane, in 89% yield with high stereoselectivity. Similarly, non-conjugated diene cyclization products on zirconium were also selectively converted into monohalogenated compounds. These selective monohalogenations proceeded via alkylalkoxyzirconocene complexes.
Synthesis of Cyclotetragermanes of the Type of [R(Ph)Ge]4 and Conversion to [R(Cl)Ge]4. The First Functionalized Cyclotetragermanes
Authors: Sekiguchi Akira , Yatabe Tetsuo , Naito Hiroyoshi , Kabuto Chizuko , Sakurai Hideki 
Published: May 2006

Abstract
Condensations of R(Ph)GeCl2 (R = t-Bu and R = CEt2Me) with Mg/MgBr2 in THF produced cyclotetragermanes [R(Ph)Ge]4, which were converted to [R(Cl)Ge]4 by treatment with HCl/AlCl3 or with CF3SO3H followed by CH3COCl. The crystal structure of [t-Bu(Cl)Ge]4 was established by X-ray diffraction. Unusual configurational behavior of cyclotetragermanes is also described.
C(9)-C Bonds of 10-Methyl-9-alkyl-9,10-dihydroacridines Acting Like Metal-Carbon Bonds in the Reactions with Electrophiles
Authors: Fukuzumi Shunichi , Tokuda Yoshihiro , Fujita Morifumi , Otera Junzo , Chanon Michel , Rajzmann Michel , Thomas Phillipe 
Published: May 2006

Abstract
The C(9)-C bonds of 10-methyl-9-alkyl-9,10-dihydroacridines (AcrHR : R = CMe2COOMe, CMe(H)COOEt, But, CHPh2) are readily cleaved by electrophiles (perchloric acid, oxygen, and iodine) in acetonitrile at 298 K, acting like metal-carbon bonds to yield the corresponding alkane, alkyl hydroperoxide, and alkyl iodide, respectively.
Photolysis and Photopolymerization of Novel Organic Peroxides Having a Benzophenone Chromophore
Authors: Suyama Shuji , Higuchi Yoshiki , Kumura Hiromi 
Published: May 2006

Abstract
Dialkyl peroxides having a benzophenone chromophore have been successfully synthesized from the reaction of 2-t-butyldioxy-2-methyl-1-propanol and corresponding benzoyl chloride. These peroxides had UV absorption above 300 nm. The free radicals produced during the photolysis of these compounds initiated the radical polymerization of methyl methacrylate at room temperature.
Facile Attachment of Uranium Hexacyanoferrate to Carbon Electrode by Reductive Electrodeposition
Authors: Jiang Mian , Wang Min , Zhou Xingyao 
Published: May 2006

Abstract
Cyclic voltammetric scan of the glassy carbon substrate in an acidic solution containing both uranyl salt and ferricyanide can result in the new surface-deposition of an inorganic redox active film–polynuclear uranium hexacyanoferrate.
Structure Elucidation of Oxygenated Sterols from Eggs of Sea Hare, Aplysia Juliana
Authors: Yamaguchi Yoshihiro , Nakanishi Yukio , Shimokawa Teruyuki , Hashiguchi Shigeru , Hayashi Akira 
Published: May 2006

Abstract
Cholest-7-en-6R-methoxy-3S,5R-diol, a new sterol, and cholest-7-en-3S,5R,6R-triol were isolated from eggs of sea hare, Aplysia Juliana, and their structures and absolute configurations deduced by spectroscopic studies and chemical synthesis.
Electrochemical Methane Activation to C2-Hydrocarbons Using Protonic Conductor
Authors: Hibino Takashi , Hamakawa Satoshi , Iwahara Hiroyasu 
Published: May 2006

Abstract
Coupling of methane was performed using SrCe0.95Yb0.05O3−x as a solid electrolyte. The electrochemical hydrogen pump activated methane to C2-hydrocarbons without forming carbon dioxide.
Three-Layer Organic Solar Cell
Authors: Shichiri Tokushige , Suezaki Minoru , Inoue Takeshi 
Published: May 2006

Abstract
Three-layer organic cells composed of perylene pigment/phthalocyanine/quinacridone were examined, and the photocurrent was founded to be greatly affected by the thickness of phthalocyanine layer. Furthermore, the tandem type solar cells were fabricated by combining of several units of the three-layer cell to clarify the relationship between the number of accumulated unit cells and cell characteristics.
Direct Determination for the pKa Values of Radical Cations of NADH Analogues
Authors: Fukuzumi Shunichi , Tokuda Yoshihiro 
Published: May 2006

Abstract
The pKa values of radical cations of NADH analogues, 10-methyl-9,10-dihydroacridine (AcrH2) and 9,10-dimethyldihydroacridine (AcrHMe), have been determined directly by measuring the decay of the transient absorption spectra of the radical cations, formed by the electron transfer oxidation with Fe3+, through the deprotonation in the presence of various concentrations of perchloric acid in acetonitrile at 298 K.
Hydrogenation of Alkyne Using Palladium-Zeolite Coupled with Diphenyldiethoxysilane
Authors: Kuno Hideyuki , Shibagaki Makoto , Takahashi Kyoko , Honda Ichiro , Matsushita Hajime 
Published: May 2006

Abstract
Palladium-zeolite coupled with diphenyldiethoxysilane was prepared by Chemical Vapor Deposition (CVD). The hydrogenation of alkyne was carried out over this catalyst. Alkyne was converted to the corresponding alkene with a high selectivity in a manner similar to that in the case of Lindlar catalyst.