bluuebunny/crossref_metadata_2025_split huggingface dataset:
A New Furostanol Saponin with Six Sugars from the Bulbs of Allium sphaerosephalon Structural Elucidation by Modern NMR Techniques
Authors: Mimaki Yoshihiro , Satou Tadaaki , Kuroda Minpei , Kameyama Aiko , Sashida Yutaka , Li Hong-yu , Harada Nobuyuki 
Published: March 2006

Abstract
A new bisdesmosidic furostanol saponin with six monosaccharides (1) was isolated from the bulbs of Allium sphaerosephalon. The structure was determined by the concerted use of modern NMR techniques. The corresponding spirostanol saponin (2) of 1 showed cytotoxic activity against leukemia MOLT-4 cells, while 1 was inactive.
Characterization of Dyestuff-containing Liposome by Capillary Zone Electrophoresis Using On-line Chemiluminescence Detection
Authors: Tsukagoshi Kazuhiko , Akasaka Hideshi , Nakajima Riichiro , Hara Tadashi 
Published: March 2006

Abstract
Eosin Y-containing liposome solution as a sample was migrated and detected by capillary zone electrophoresis for the first time with a chemiluminescence detection using peroxyoxalate system. Two peaks were recorded on the electropherogram; the first one was due to Eosin Y entrapped in liposome and the second one due to free Eosin Y in the bulk solution. The electropherogram comprising the two peaks offered various informations of liposome, such as size distribution, stability, permeability, or surface charge.
Molecular Organization of Mono(p-hydroquinonyl)porphyrin through Coordinate Bond
Authors: Miyaji Hidekazu , Kobuke Yoshiaki , Kondo Jiro 
Published: March 2006

Abstract
Mono(p-hydroquinonyl)tritolylporphyrin and its magnesium complex were prepared. Molecular organization of the magnesium complex in solution was examined by using 1H-NMR spectroscopy.
Novel Catalysts Effective for Dehydrofluorination of CF3CH3 (HFC143a) into CF2CH2
Authors: Li Gong-Liang , Ishihara Tatsumi , Nishiguchi Hiroyasu , Moro-oka Yoshihiko , Takita Yusaku 
Published: March 2006

Abstract
The catalytic dehydrofluorination of CF3CH3 into CF2CH2 was studied over various metal phosphates in a fixed-bed reactor. The Mg2P2O7 catalyst exhibited moderate activity, higher selectivity and greater stability. The active sites for CF2CH2 formation are weak acid sites of the catalysts.
Selective Transport of Alkali Metal Ions Across Black Lipid Membranes (BLM) Composed of Ionophilic Amphiphiles
Authors: Kimizuka Nobuo , Wakiyama Tatsuo , Kunitake Toyoki 
Published: March 2006

Abstract
Transport of alkali-ions across black lipid membranes (BLM) formed from cationic and anionic, double-chain amphiphiles was characterized by the charge pulse relaxation technique. Amphiphiles containing an ether linkage in the alkyl tail portion displayed enhanced transport rates for sodium and potassium ions, while such selectivity is not observed for the related amphiphile without the ether linkage.
Energy Transfer Luminescence of Tb3+ Complexed with Oxyethylene Compounds Containing Xanthene
Authors: Suzuki Yoshio , Morozumi Tatsuya , Kakizawa Yusuke , Bartsch Richard A , Hayashita Takashi , Nakamura Hiroshi 
Published: March 2006

Abstract
Three polyether compounds (1-3) which have more than two fluorescent moieties in the both terminals were synthesized, and their complexation properties with Tb3+ were discussed. After formation of complex with Tb3+, sharp fluorescence lines were observed at visible region due to intramolecular energy transfer from xanthene chromophore to bound Tb3+. The correlation between energy transfer efficiency and ligand structure for three analogous compounds were investigated.
New Homo-coupling Reaction of Alkyl, Aryl, Vinyl, and Allyl Grignard Reagents Using Trifluoromethanesulfonic Anhydride
Authors: Nishiyama Tomihiro , Seshita Takeshi , Shodai Hiroshi , Aoki Kazushige , Kameyama Hideaki , Komura Kenichi 
Published: March 2006

Abstract
Homo-coupling reaction of various alkyl, aryl, vinyl, and allyl Grignard reagents with trifluoromethanesulfonic anhydride provides a simple and straightforward method for the syntheses of symmetrical carbon-carbon coupling products under mild conditions and in moderate to good yields.
Porous Aggregates of Unidirectionally Oriented (NH4)3PW12O40 Microcrystallites: Epitaxial Self-Assembly
Authors: Inumaru Kei , Nakajima Hitoshi , Ito Takeru , Misono Makoto 
Published: March 2006

Abstract
Microcrystallites of (NH4)3PW12O40 self-assembled to form symmetric dodecahedral aggregates (ca. 0.5–6 μm in size) in which the microcrystallites joined together with the same crystal orientation, by controlled deposition of NH4 salts from a heated aqueous solution of H3PW12O40. These aggregates were highly porous, where microcrystallies were connected each other by epitaxial interfaces.
Novel Low-molecular-weight Organic Gels: N,N′,N″-Tristearyltrimesamide/Organic Solvent System
Authors: Yasuda Yoshiaki , Iishi Eiichi , Inada Hiroshi , Shirota Yasuhiko 
Published: March 2006

Abstract
A novel class of low-molecular-weight organic gels has been developed; N,N′,N″-tristearyltrimesamide (TSTA) forms gels with various organic solvents, immobilizing solvent at a low concentration of TSTA. The gels, which form fibrous bundles leading to three-dimensional networks, exhibit well-defined sol-gel transitions. Both intermolecular hydrogen bonding and intermolecular inteactions between long alkyl chains are suggested to be responsible for the formation of gels.
Template Synthesis of Phenol-based Heterodinucleating Macrocycles with Dissimilar N(amine)2O2 and N(imine)2O2 Metal-binding Sites
Authors: Yonemura Masami , Matsumura Yukiko , Ohba Masaaki , Okawa Hisashi , Fenton David E 
Published: March 2006

Abstract
Phenol-based dinucleating macrocycles possessing two dissimilar N(amine)2O2 and N(imine)2O2 metal-binding sites, sharing two phenolic oxygens, have been obtained as mononuclear Cu(II) complexes, capable of incorporating a second metal ion to provide homo- and hetero-dinuclear complexes.
A Novel Tetranuclear Iron(III) Complex Having l-Alanine Bridges and an Unprecedented (Fe4(O2H) Core
Authors: Yano Shigenobu , Inagaki Tomoko , Yamada Yasuko , Kato Masako , Yamasaki Mikio , Sakai Ken , Tsubomura Taro , Sato Mitsunobu , Mori Wasuke , Yamaguchi Kazuya , Kinoshita Isamu 
Published: March 2006

Abstract
The reacion of l-alanine (l-ala) with Fe(NO3)2·9H2O in the presence of H5dhpta (1,3-diamino-2-hydroxypropane-N,N,N′,N′-tetraacetic acid) and base (NaOH) affords the novel tetranuclear complex Na[Fe4(dhpta)2(O)(OH)(l-ala)2]·6H2O having l-alaninato bridges and an (Fe4(O2H))9+ core whose crystal structure and magnetic properties were determined.
A Coupling Wave Optical Waveguide Chemical Sensor Constructed by Combining the Ion-exchange and the Sol-gel Methods
Authors: Qing De-Kui , Itoh Kiminori , Murabayashi Masayuki 
Published: March 2006

Abstract
A coupling wave optical waveguide sensor was proposed, and realized by combining the ion-exchange and the sol-gel methods. The new optical waveguide (OWG) sensor is based on a stacked slab optical waveguide codirectional coupler, and proved to be advantageous over conventional OWG sensors. A gas sensor fabricated as an example easily detected 5 ppm H2S.
New Narrow-Bandgap Polymers Composed of [1,2,5]Thiadiazolo[3,4-g]quinoxaline and Aromatic Heterocycles
Authors: Kitamura Chitoshi , Tanaka Shoji , Yamashita Yoshiro 
Published: March 2006

Abstract
Polymers Composed of [1,2,5]thiadiazolo[3,4-g]quinoxaline and either thiophene or N-methylpyrrole were synthesized by electrochemical polymerization and showed bandgaps of about 0.7 eV.
Microwave Assisted Synthesis of S-Trityl and S-Acylmercaptoalkanols, Nucleosides and Their Deprotection
Authors: Kumar P , Gupta K C 
Published: March 2006

Abstract
Simple and high yielding methods for the synthesis and deprotection of S-trityl and S-acylhexanols and appropriately protected 2′-deoxynucleosides in solvent and dry media conditions are described which occur under mild conditions using microwave irradiation.
Photochemistry of π-Complexes of Chlorine Atom with Methyl- and Ethyl-Substituted Benzenes
Authors: Feng Wu , Sumiyoshi Takashi , Yamashita Yuichiro , Shindo Toshihiko , Sawamura Sadashi 
Published: March 2006

Abstract
The photochemistry of π-complexes of the chlorine atom with a series of methyl- and ethyl-substituted benzenes has been investigated using combined pulse radiolysis-laser flash photolysis techniques. Direct photolysis of π-complexes in carbon tetrachloride causes photobleaching by intramolecular hydrogen abstraction with quantum yields of 0.05–0.15 depending on the substituents but not on the positions of them.
Reactivity of the Si-C Bond of [1]Silaferrocenophane: Palladium-Catalyzed Dimerization and Oxidative Addition to a Pt(0) Complex
Authors: Reddy Nagavelli Prabhakar , Choi Nami , Shimada Shigeru , Tanaka Masato 
Published: March 2006

Abstract
[1]Silaferrocenophanes (1) underwent dimerization reaction in the presence of palladium-trialkylphosphine complexes. A mechanistically-related [2]platinasilaferrocenophane complex was formed when 1 was treated with Pt(PEt3)3.
Dichroism of π-Conjugated Poly(quinoxaline-5,8-diyl)s in Stretched Poly(vinyl alcohol) Film and Photoluminescence of the Polymer
Authors: Yamamoto Takakazu , Lee Bang-Lin 
Published: March 2006

Abstract
Poly(quinoxaline-5,8-diyl)s exhibit two π-π* absorption bands, and one of the two absoption bands is assigned to a π-π* transition occurred along the direction of the polymer main chain from their dichroism. Photoluminescence of the polymer suggests intramolecular energy transfer.
Magnetic Field Effects on Photoelectrochemical Responses of Modified Electrodes with Porphyrin-Viologen Linked Compound as Langmuir Blodgett Film
Authors: Yonemura Hiroaki , Ohishi Kei , Matsuo Taku 
Published: March 2006

Abstract
Modified electrodes were fabricated by depositing a monolayer containing porphyrin-viologen linked compound on ITO electrodes by Langmuir-Blodgett method. Visible light irradiation on the modified electrodes afforded stable anodic photocurrents. The photocurrents clearly increased in the presence of magnetic fields. The magnetic field effects on photocurrents, as observed for the first time, are ascribed to the contribution of triplet radical pairs.
Drawing Fine Patterns with Cross-Linkable Polymer Langmuir-Blodgett Film
Authors: Aoki Atsushi , Nakaya Masakazu , Miyashita Tokuji 
Published: March 2006

Abstract
Langmuir-Blodgett (LB) films of copolymer (1) consisting of N-dodecylacrylamide (DDA), and cross-linkable group, N-ω-acryloylundecyl-4-vinylpyridinium salt has been prepared. On UV irradiation, the cross-linking reaction occurs efficiently giving uniform two dimensional cross-linked polymer LB films with a high stability against solvents. The photolithographic property of the LB film are applicable to a new type of high resolution negative photoresists.
Cytochrome c Cross-linked with Glutaraldehyde (1); Electrochemical Response in Poly(ethylene oxide) Oligomers
Authors: Ohno Hiroyuki , Kurusu Fumiyo 
Published: March 2006

Abstract
For rapid electron transfer of cytochrome c(cyt.c) in poly(ethylene oxide)(PEO) oligomers, higher-ordered structure of cyt.c was cross-linked intramolecularly with glutaraldehyde, and the redox reaction of this cyt.c was analyzed. The cross-linked cyt.c was soluble in PEO oligomers and showed better electrochemical redox response than PEO-modified cyt.c. Little conformational change of the cross-linked cyt.c was suggested even after adsorption on the electrode.
Fluorescence Enhancement Observed in Tetra-aza Macrocycles by Lithium Complexation
Authors: Ogawa Shojiro , Tsuchiya Shinji 
Published: March 2006

Abstract
The fluorescence spectra of tetra-aza macrocycles containing pyridine rings and their lithium complexes were measured and specific fluorescence behaviors were found. That is, the complexation of tetra-aza macrocycle with lithium ion dramatically enhances the fluorescence intensity (over 1100 fold).
Enantioselective Glucosylation of (R,S)-1-Phenylethanol by the Cultured Suspension Cells of Higher Plants
Authors: Lee Ym Sook , Ito Diana I , Koya Kazuhiko , Izumi Shunsuke , Hirata Toshifumi 
Published: March 2006

Abstract
(R,S)-1-Phenylethanol and its acetate were transformed into their β-d-glucopyranoside by the cultured suspension cells of Nicotiana tabacum and Catharanthus roseus. The glucosylation with the green N. tabacum cells occurred enantioselectively to give the glucoside of the (S)-alcohol, while the biotransformation with the white N. tabacum cells and C. roseus cells gave preferentially the glucoside of the (R)-alcohol.
Synthesis and Catalysis of Colloidal Dispersions of Pd/Ni Bimetallic Clusters
Authors: Toshima Naoki , Lu Ping 
Published: March 2006

Abstract
Pd/Ni bimetallic clusters have been successfully prepared for the first time by a polyol reduction method, in which a mixed solution of Pd and Ni salts were reduced at high temperature by ethylene glycol. The bimetallic clusters are proved by TEM, XRD and preliminary EXAFS analysis to have an alloy structure. The bimetallic clusters show much higher catalytic activity for hydrogenation of nitrobenzene to aniline under mild conditions than the monometallic Pd or Ni clusters.
The Catalytic Friedel-Crafts Acylation Reaction of Aromatic Compounds with Carboxylic Anhydrides Using Combined Catalyst System of Titanium(IV) Chloride Tris(trifluoromethanesulfonate) and Trifluoromethanesulfonic Acid
Authors: Izumi Jun , Mukaiyama Teruaki 
Published: March 2006

Abstract
Various aromatic ketones are prepared in good to high yields with carboxylic anhydrides using combined catalyst system of TiCl(OTf)3 and TfOH.
Synthesis and Unique Packing Structure by X-Ray Analysis of New Types of Stable Trithioles Bound to Fused Aromatic Systems
Authors: Ogawa Satoshi , Nobuta Susumu , Nakayama Ryoichi , Kawai Yasushi , Niizuma Shigeya , Sato Ryu 
Published: March 2006

Abstract
New types of stable trithioles bounds to fused aromatic systems have been synthesized and one of them, phenanthro[9,10-d][1,2,3]trithiole, has been characterized by X-ray crystallographic analysis, which has a unique helical packing arrangement.
Marked Difference between 1,1,3,3-Tetramethyl-2-oxobutyl and 1,3,3-Trimethyl-2-oxo-cyclopentyl Systems in the Grunwald–Winstein Relationships in Solvolysis
Authors: Takeuchi Ken’ichi , Ohga Yasushi , Ushino Takuhiro 
Published: March 2006

Abstract
The solvolysis rates of 1,1,3,3-tetramethyl-2-oxobutyl methanesulfonate (1) have been reported to give a nicely linear Grunwald–Winstein relation, whereas those of structurally similar 1,3,3-trimethyl-2-oxocyclopentyl methanesulfonate (2) exhibit a scattered plot and well correlated by log(k⁄k0) = (0.57 ± 0.07)NOTs + (0.55 ± 0.05)YOTs + (0.03 ± 0.09). These results indicate the difference in the direction of departure of the leaving group in the transition state.
Sugar-Sensing by Chiral Orientation of Dimeric Boronic-Acid-Appended Porphyrins Which Show Selectivity for Glucose and Xylose
Authors: Arimori Susumu , Takeuchi Masayuki , Shinkai Seiji 
Published: March 2006

Abstract
5,10,15,20-Tetrakis(4-boronylphenyl)porphyrin (1) and 5,10,15,20-tetrakis[N-(2- or 4-boronylphenyl)methyl-pyridinium]porphyrin (o-2 or p-2) formed a 1:1 complex, which gave specific exciton-coupling bands in CD spectroscopy only in the presence of glucose and xylose among monosaccharides. The structural examination established that only these monosaccharides can bridge two porphyrins by covalent-bond formation with boronic acids and twist them asymmetrically.
Facile Determination of Dissolved Species in CO2-Amine-H2O System by NMR Spectroscopy
Authors: Suda Taiichiro , Iwaki Toru , Mimura Tomio 
Published: March 2006

Abstract
In order to clarify the characteristic behavior of dissolved state of CO2 in alkanolamine-H2O system five different kinds of alkanolamines were examined spectroscopically under the following conditions: 40 °C for 30 min to 120 min. NMR analysis indicated the presence of five chemical species such as carbamate ion, free amine, bicarbonate, carbonate, and protonated amine. Based on proton NMR, distribution of the respective species against molar loading of CO2 was successfully evaluated.
Organized Photocycloaddition of 4-Benzoylbenzoate with Unsaturated Carboxylates in Hydrotalcite Clay Interlayers
Authors: Shichi Tetsuya , Takagi Katsuhiko , Sawaki Yasuhiko 
Published: March 2006

Abstract
Photoirradiation of a mixture of 4-benzoylbenzoate (1) and 4-(2-phenylethenyl)benzoate yielded regioselective oxetanes in the presence of hydrotalcite clay. Similar irradiation of a mixture of 1 and cinnamate gave rise to β-truxinate, but not oxetane. The unexpected formation of oxetanes is understood by the favorable distance between C=O and C=C bonds packed in clay interlayers.
Nitric Oxide Trapping Efficiencies of Water-Soluble Iron(III) Complexes with Dithiocarbamate Derivatives
Authors: Fujii Satoshi , Yoshimura Tetsuhiko , Kamada Hitoshi 
Published: March 2006

Abstract
NO trapping efficiencies of three water-soluble iron(III) complexes with dithiocarbamate derivatives (DTC) are investigated by electron paramagnetic resonance spectroscopy. The obtained data show the dependence on the the structure of the substituent of -NRR′ portion of DTC and on the solvent nature in which Fe-DTC complex are dissolved.
Palladium-Catalyzed Coupling Reaction of Salicylaldehydes with Aryl Iodides via Cleavage of the Aldehyde C–H Bond
Authors: Satoh Tetsuya , Itaya Tomoaki , Miura Masahiro , Nomura Masakatsu 
Published: March 2006

Abstract
It has been found that the cross-coupling reaction of salicylaldehydes with aryl iodides smoothly proceeds by using a catalyst system of PdCl2/LiCl in the presence of Na2CO3 as base to give the corresponding 2-aroylphenols in good yields, which appears to involve cleavage of the aldehyde C–H bond.
Synthesis of (+),(−)-Model Compounds and Absolute Configuration of Carthamin; A Red Pigment in the Flower Petals of Safflower
Authors: Sato Shingo , Obara Heitaro , Kumazawa Toshihiro , Onodera Jun-ichi , Furuhata Kimio 
Published: March 2006

Abstract
(+)- and (−)-Model compounds of a carthamin were synthesized. The absolute configuration of carthamin was deduced to be S, S by means of CD spectroscopy and X-ray analysis.
Chiral Discrimination of 1-Phenylethylamine by Diastereomeric Salt Formation with Bile Acids. Crystal Structures of Cholic Acid Salts with (R)- and (S)-1-Phenylethylamine
Authors: Sada Kazuki , Maeda Tomohiro , Miyata Mikiji 
Published: March 2006

Abstract
Chiral discrimination of 1-phenylethylamine (1) by diastereomeric salt formation with bile acids is described. X-ray crystallographic studies of the salts between cholic acid (2a) and (R)-, (S)-, and (RS)-1 reveal that more densely packed (S)-1+2a salt crystallizes preferentially by treatment of 2a from racemic 1.
Variable Coordination Geometries in Manganese(II): Eight-, Seven-, and Six-Coordinate Mn(II) Complexes with Pyridyl-Containing Schiff-Base Ligands
Authors: Mikuriya Masahiro , Hatano Yasushi , Asato Eiji 
Published: March 2006

Abstract
Eight, seven-, and six-coordinate manganese(II) complexes with N,N′-bis(2-pyridinylmethylene)-1,3-diaminopropan-2-ol(HL) and N,N′-bis(2-pyridinylmethylene)-1,3-diaminopropane(L′), [Mn(HL)(NO3)2]·C2H5OH, [Mn(L′)(NO3)2], [Mn(L′)(bipy)(CH3OH)](ClO4)2, [Mn(L′)(phen)](ClO4)2, and [MN2(L)(CH3COO)(phen)2](ClO4)2·H2O, have been isolated and characterized by X-ray crystallography.
Ground State Triplet Cation Diradicals Generated from N,N-Dimethylamino Nitronyl Nitroxide and Its Homologues through One-Electron Oxidation
Authors: Sakurai Hiromi , Kumai Reiji , Izuoka Akira , Sugawara Tadashi 
Published: March 2006

Abstract
N,N-Dimethylamino nitronyl nitroxide (1) and its homologues were prepared. One-electron oxidation of these open-shell donors were fond to afford ground state triplet species based on the ESR spectroscopic measurements. The electronic structure of 1+• is characterized by the presence of the two singly occupied orbitals (SOMO and SOMO′) and can be regarded as a hetero-analogue of trimethylenemethane.
Spontaneous Formation of a Molecular Net Assembly by Using Nucleotide Complementarity
Authors: Takenaka Shigeori , Funatu Yousuke , Kondo Hiroki 
Published: March 2006

Abstract
A mixture of ferrous-bipyridine complexes carrying an adenosine or thymidine 20-mer on the ligand forms a two-dimensional molecular network through hybridization of the complementary oligonucleotides.
Synthesis of New Imidazoanthraquinol Fluorophores and Their Fluorescence and Solid-State Inclusion Properties
Authors: Yoshida Katsuhira , Yamasaki Jun , Tagashira Yoshinao , Watanabe Shigeru 
Published: March 2006

Abstract
Isomeric pairs of new imidazoanthraquinol-type fluorophores have been synthesized by reaction of a imidazoanthraquinone dye with organometallic reagents. One of a pair was found to exhibit an intense fluorescence in solutions and to form clathrate crystals that contained various kinds of solvent molecules as guest species.
Synthesis and Self-Assembly of Porphyrin-linked Fullerene on Gold Surface Using S-Au Linkage
Authors: Akiyama Tsuyoshi , Imahori Hiroshi , Ajawakom Anawat , Sakata Yoshiteru 
Published: March 2006

Abstract
Porphyrin-linked fullerene bearing methylthio group was prepared by 1,3-dipolar cycloadditon of the azomethine ylide, generated in situ using N-methylglycine and a formylporphyrin, with C60. Self-assembled monolayer was formed by soaking Au electrode into a solution of the porphyrin-C60 dyad. The photocurrent was observed for the photochemical cell in the presence of electron carrier under illumination.
Preparation of Calcium-Strontium Apatite through Mechanochemical Method
Authors: Yokogawa Yoshiyuki , Toriyama Motohiro , Kawamoto Yukari , Suzuki Takahiro , Nishizawa Kaori , Nagata Fukue , Mucalo M R 
Published: March 2006

Abstract
The formation of a calcium-strontium apatite solid solution precursor via mechanochemical method was described. The precursor is formed by a process of ball-milling of a slurry consisting of a mixture of the starting materials; CaHPO4·2H2O, CaCO3, SrHPO4 and Sr(OH)4·8H2O in a zirconia pot mill for 24 h in the presence of water at room temperature over the entire Ca/(Ca+Sr) compositional range. Calcium-stontium apatite precursor obtained from ball-milling began to change to calcium-stontium apatite upon heating at temperature over 500 °C.
Tetraarylporphyrins as Probes for Studying Mechanism of Inclusion-complex Formation of Cyclodextrins. Effect of Microscopic Environment on Inclusion of Ionic Guests
Authors: Kano Koji , Tanaka Naoya , Minamizono Hideo , Kawakita Yoshihiro 
Published: March 2006

Abstract
The pKa values and the 1H NMR spectra of tetraarylporphyrins in the presence of cyclodextrins suggest that the microscopic environment of the positively polarized cavity of cyclodextrin promotes the inclusion of the anionic guest and prohibits the penetration of the cationic guest into the cyclodextrin cavity.
Inverse Substituent Effect on 77Se NMR Chemical Shifts in Naphthalene Systems with Linear 4c-6e Se4 Bond: 1-[8-(p-YC6H4Se)C10H6]SeSe[C10H6(SeC6H4Y-p)-8′]-1′ vs. 1-(MeSe)-8-(p-YC6H4Se)C10H6
Authors: Nakanishi Warô , Hayashi Satoko , Yamaguchi Hitomi 
Published: March 2006

Abstract
The substituent effect on δ(1Se) vs. δ(8Se) in bis[8-arylselanyl)naphthyl] diselenides (1) was oppsite to that for 1-(methylselanyl)-8-(phenylselanyl)naphthalene and its p-substituted derivatives. The observation must be the reflection of the 4c-6e interaction between the p-orbitals of the four Se atoms in 1.
ESR Studies on Poly(methyl acrylate) Radicals to Estimate Their Dominant Structure
Authors: Sugiyama Yoshio 
Published: March 2006

Abstract
Electron Spin Resonance (ESR) examinations of the propagating radicals in the polymerization of methyl acrylate (MA) and methyl acrylate-α-d (MA-d) in the frozen state have been made. Selective deuteration of MA showed that the propagating radicals have the chain-end (I) and not the mid-chain (II) structure. The stable conformation of poly (methyl acrylate) (poly (MA)) radical was also determined.