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Vol. 80, No. 5 (May, 2007)
[PDF version]
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May 14, 2007
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797-808
Symmetry Driven Self-Assembly of Metallo-Supramolecular Architectures
M. Albrecht* and R. Fröhlich
[Full Text PDF(J-STAGE)]
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The self-assembly leading to metallosupramolecular aggregates like helicates, meso-helicates or M4L4 tetrahedra is controlled by the symmetry of the molecular building blocks: ligands as well as metal ions.
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May 14, 2007
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| 809-822
Tin-Free Radical Carbon–Carbon Bond-Forming Reactions Based on α-Scission of Alkylsulfonyl Radicals
S. Kim* and S. Kim
[Full Text PDF(J-STAGE)]
Tin-free radical reactions based on α-scission of alkylsulfonyl radicals are very useful for various carbon–carbon bond formations. Especially, alkyl allyl sulfone precursors are highly efficient and most reliable to generate primary alkyl radicals under tin-free conditions for the further formation of carbon–carbon bonds.
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Web Release Date:
May 14, 2007
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823-841
Chemical Biology that Controls DNA Structure and Function: Lessons in Organic Chemistry from Nature
H. Sugiyama
[Full Text PDF(J-STAGE)] Free Access Article
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Our long term efforts in understanding of DNA reactivity, structure, and function are reviewed. The prospective uses of the chemical biology of DNA are also discussed.
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May 14, 2007
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842-855
Photochemistry and Photo-Induced Ultrafast Dynamics at Metal Surfaces
Y. Matsumoto
[Full Text PDF(J-STAGE)] Free Access Article
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The stretching mode of alkali-metal adsorbates at a metal surface is coherently excited with femtosecond pump pulses and its decaying process is probed by using second harmonic generation in real time.
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May 14, 2007
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856-871
Development and Application of a Convergent Strategy for the Total Synthesis of Polycyclic Ether Natural Products
M. Sasaki
[Full Text PDF(J-STAGE)] Free Access Article
The polycyclic ether class of marine natural products presents formidable and challenging synthetic targets due to their structural complexity and exceptionally potent biological activities. In this account, the development and application of a convergent strategy for the synthesis of natural polycyclic ethers are described.
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May 14, 2007
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872-884
Functionalities of a Nanoporous Crystal 12CaO·7Al2O3 Originating from the Incorporation of Active Anions
K. Hayashi,* M. Hirano, and H. Hosono
[Full Text PDF(J-STAGE)] Free Access Article
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A cage structure in a positively charged lattice framework was utilized to incorporate and release chemically unstable anions. This approach imparted unique chemical and electronic activities to this material.
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May 14, 2007
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885-893
Investigations of Electronic Structures and Photocatalytic Activities under Visible Light Irradiation of Lead Molybdate Replaced with Chromium(VI)
Y. Shimodaira, H. Kato, H. Kobayashi, and A. Kudo*
[Full Text PDF(J-STAGE)] Free Access Article
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PbMo1−xCrxO4 exhibited visible light-driven photocatalytic activity for O2 evolution from an aqueous solution. On the basis of DFT calculations, the present study indicated that the formation of an electron-accepter level is one strategy for developing new visible light driven photocatalysts.
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May 14, 2007
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894-898
Group-Inclusion Complex and Its External High Pressure Effect in O-Methylated β-Cyclodextrin as Compared with Unmodified β-Cyclodextrin
Y. Sueishi,* H. Tobisako, and Y. Kotake
[Full Text PDF(J-STAGE)]
High static pressure was applied to the inclusion complex of a modified β-cyclodextrin, heptakis(2,6-di-O-methyl)-β-cyclodextrin (DM-β-CD). We investigated group-inclusion equilibria in DM-β-CD under high static pressure and compared with the data for unmodified β-CD.
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May 14, 2007
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| 899-901
The Effect of Magnetic Field on the Bleaching of Indigo Dyes with Hydrogen Peroxide Catalyzed by Imidazole
A. A. Rousan and A. M. Al-Ajlouni*
[Full Text PDF(J-STAGE)]
The effect of applying a magnetic field on the catalytic oxidation of indigo dyes by H2O2/imidazole was investigated. The rate of oxidation, in the presence of imidazole, was enhanced by applying an external magnetic field in the range of 0.035–0.12 T.
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May 14, 2007
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| 902-909
6,6″-Azobis(2,2′-bipyridine) and Its Dinuclear Ruthenium Complex: A Comparative Study with Positional Isomers
J. Otsuki,* I. Kurihara, A. Imai, Y. Hamada, and N. Omokawa
[Full Text PDF(J-STAGE)] [Supporting Information]
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The ligand 6,6″-azobis(2,2′-bipyridine), a new member of the family of azo-bridged bis(bipyridine) ligands, was prepared. A dinuclear Ru complex bridged by this ligand was characterized, and it was shown that the bridge mediates a moderate, but the largest among the family, intermetallic interaction.
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| Web Release Date:
May 14, 2007
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| 910-915
Dissociation Kinetics and Complexation Equilibrium Studies of a ZnII Complex with 1,5-Bis(2-hydroxy-5-sulfophenyl)-3-cyanoformazan during Capillary Electrophoretic Separation Process
T. Takahashi,* Y. Takehara, and H. Hoshino
[Full Text PDF(J-STAGE)] [Supporting Information]
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The dissociation reaction kinetics and the complexation equilibrium of a metal complex were studied to clarify whether the “stability” of the metal complex during capillary electrophoretic separation process is kinetic or thermodynamic.
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May 14, 2007
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| 916-921
Dinuclear Valence Tautomeric 1,2-Semiquinonato/Catecholatocobalt Complexes Containing 1,1,4,7,10,10-Hexamethyltriethylenetetramine
H. Liang, Y. M. Na, I. S. Chun, S. S. Kwon, Y.-A Lee, and O.-S. Jung*
[Full Text PDF(J-STAGE)]
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Intramolecular charge distribution between [CoIII]/[CoII] valence tautomers of two dinuclear 1,2-semiquinonato/catecholatocobalt complexes with 1,1,4,7,10,10-hexamethyltriethylenetetramine (hmteta) was investigated. [Co2(hmteta)(3,6-dbbq)4]·2C6H5CH3 was low spin [CoIII(3,6-dbsq)(3,6-dbcat)(hmteta)CoIII(3,6-dbsq)(3,6-dbcat)] (3,6-dbsq = 3,6-di-tert-butyl-1,2-semiquinonato; 3,6-dbcat = 3,6-di-tert-butylcatecholato), while [Co2(hmteta)(3,5-dbbq)4]·C6H5CH3 was close to [CoII(3,5-dbsq)2(hmteta)CoII(3,6-dbsq)2] in the solid state at ambient temperature.
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| Web Release Date:
May 14, 2007
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| 922-936
Syntheses and Crystal Structures of Mono(di-2-pyridylamine)chloro(dimethyl sulfoxide-S)ruthenium(II) Complexes [RuCl2(Hdpa)(dmso-S)2] and [RuCl(Hdpa)(dmso-O)(dmso-S)2](OTf)
M. Toyama,* R. Suganoya, D. Tsuduura, and N. Nagao*
[Full Text PDF(J-STAGE)] [Supporting Information]
Two isomers of a mono(di-2-pyridylamine)ruthenium complex, trans(Cl),cis(S)- and cis(Cl),cis(S)-[RuCl2(Hdpa)(dmso-S)2] (1 and 2, respectively), along with cis(Cl,S),trans(O,S)-[RuCl(Hdpa)(dmso-O)(dmso-S)2](OTf) (3·(OTf)), were selectively synthesized and characterized by X-ray crystallography. The crystal structures revealed that the conformation of the Hdpa ligand varies according to its interaction with the co-ligands (dmso and Cl−) or counter-anion (OTf−).
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May 14, 2007
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| 937-950
Syntheses, Crystal Structures, and Conversion of Three Linkage Isomers of Di-2-pyridyl Ketone in Dichlorobis(dimethyl sulfoxide-S)ruthenium(II) and Chlorobis(dimethyl sulfoxide-S)ruthenium(II) Complexes: [RuCl2(dpk-κ2N,O)(dmso-S)2], [RuCl2(dpk-κ2N,N′)(dmso-S)2], and [RuCl(dpk-OH-κ3N,O,N′)(dmso-S)2]
M. Toyama,* M. Nakahara, and N. Nagao*
[Full Text PDF(J-STAGE)] [Supporting Information]
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Ruthenium(II) complexes containing three linkage isomers of di-2-pyridyl ketone, trans(Cl),cis(S)-[RuCl2(dpk-κ2N,O)(dmso-S)2] (1), cis(Cl),cis(S)-[RuCl2(dpk-κ2N,N′)(dmso-S)2]·DMSO (2·DMSO), and trans(Cl,O),cis(S)-[RuCl(dpk-OH-κ3N,O,N′)(dmso-S)2] (4a), as well as trans(Cl),cis(S)-[AgRuCl2(dpk-OH-κ3N,O,N′)(dmso-S)2]n (3) were synthesized and characterized by X-ray crystallography. The reaction of 1 or 2 with OH− afforded 4a or cis(Cl,O),cis(S)-[RuCl(dpk-OH-κ3N,O,N′)(dmso-S)2] (4b), respectively.
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May 14, 2007
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| 951-956
On-Line Electrochemical Redox Derivatization for Enhancement of Separation Selectivity of Liquid Chromatography
K. Saitoh,* S. Naitoh, M. Endo, M. Washiya, and M. Shibukawa
[Full Text PDF(J-STAGE)]
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An on-line electrochemical redox derivatization HPLC system composed of two separation columns and a small electrolytic flow cell placed between them is presented. Selective separation of an analyte compound was achieved by controlling the redox reactions specific for the analyte through alteration of the potential applied to the cell.
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| Web Release Date:
May 14, 2007
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| 957-959
Structural Characterization of a Dioxovanadium(V) Complex with 4,8-Dihydroxyquinoline-2-carboxylic Acid
T. Moriuchi, M. Nishiyama, T. Beppu, T. Hirao,* and D. Rehder*
[Full Text PDF(J-STAGE)]
A cis-dioxovanadium(V) complex with 4,8-dihydroxyquinoline-2-carboxylic acid was synthesized and found to be packed in a hexagonal molecular arrangement through π–π interaction, creating a channel cavity for a one-dimensional water chain.
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May 14, 2007
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| 960-962
Crystal Structure, Magnetic Properties, and Second Harmonic Generation of a Three-Dimensional Pyroelectric Cyano-Bridged Mn–Mo Complex
W. Kosaka, T. Nuida, K. Hashimoto, and S. Ohkoshi*
[Full Text PDF(J-STAGE)] [Supporting Information]
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A paramagnetic pyroelectric 3-dimensional cyano-bridged bimetal assembly, [{MnII(H2O)2}{MnII(pyrazine)(H2O)2}{MoIV(CN)8}]·4H2O (P21) was synthesized. This compound displayed second harmonic generation with a value of 6.0× 10−11 esu.
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May 14, 2007
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| 963-965
Synthesis, Structures, and Properties of Nickel(II) Mixed-Ligand Complexes Containing Various β-Diketonates and a Phosphorus Donor Bidentate Ligand
M. Arakawa, H. Miyamae, and Y. Fukuda*
[Full Text PDF(J-STAGE)] [Supporting Information]
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The ternary complexes, [Ni(dike)(dppe)]X keep their square-planar structures both in solid state and in donor solvents due to the strong ligand field strength of dppe. The peak positions of these complexes are not so much different between substituent groups of β-diketonates.
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May 14, 2007
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| 966-971
Fixation of Natural Furanoeremophilane by Diels–Alder Reaction
K. Iida, M. Mitani, and C. Kuroda*
[Full Text PDF(J-STAGE)]
Unstable natural furanoeremophilanes were fixed as stable Diels–Alder adducts with maleimide.
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May 14, 2007
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| 972-978
Carbocyclization Reaction of Malonate Derivatives with Allylsilane Moiety Mediated by AlCl3-n-Bu3N
S. Imazeki,* R. Kinoshita, and T. Akiyama
[Full Text PDF(J-STAGE)]
Allylsilane bearing active methine compounds underwent intramolecular carbocyclization reaction by means of AlCl3-n-Bu3N to give silyl-substituted cyclopentanes with good yields.
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May 14, 2007
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| 979-985
Radiation-Induced Cross-Linking of Gelatin by Using γ-Rays: Insoluble Gelatin Hydrogel Formation
M. Bessho,* T. Kojima, S. Okuda, and M. Hara
[Full Text PDF(J-STAGE)]
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Hydrogels of Type-A gelatin were cross-linked by γ-ray irradiation, and then, their physical properties were investigated. From these results, we propose a model for the formation of insoluble gelatin hydrogels induced by γ-ray irradiation.
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| Web Release Date:
May 14, 2007
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| 986-993
Synthesis, Structures, and Optical Properties of Two Novel Two-Photon Initiators Derived from 2,2′:6′,2″-Terpyridine
Z.-J. Hu, J.-X. Yang,* Y.-P. Tian,* X.-T. Tao, L. Tian, H.-P. Zhou, G.-B. Xu, W.-T. Yu, Y.-X. Yan, Y.-H. Sun, C.-K. Wang, X.-Q. Yu, and M.-H. Jiang
[Full Text PDF(J-STAGE)]
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Efficient aqueous-phase aldol condensation, Michael addition, and solvent-free Wittig reactions were employed to synthesize two D–π–A-type two-photon initiators derived from 2,2′:6′,2″-terpyridine. The title initiators, which have good one and two-photon activities, were successfully utilized as initiators to realize microfabrication by TPIP.
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May 14, 2007
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| 994-998
Monodispersed Fullerene Derivatives Introduced into the Channels of Mesoporous Silica via Chemical Bond Interactions
H. Wu, Y. Lin,* J. Tang, D. Gao, R. Cai, and D. Zhao*
[Full Text PDF(J-STAGE)]
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The fullerene derivative C60(CHCOOH)2 was chemically grafted to the backbone of mesoporous silica SBA-15, and SBA-15 was shown to be an effective carrier for fullerene derivatives.
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May 14, 2007
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| 999-1003
Near-Infrared Fluorescent 2,3-Dicyanopyrazines
M. Matsui,* T. Maehashi, and K. Funabiki
[Full Text PDF(J-STAGE)]
Novel non-ionic NIR fluorecent 2,3-dicyanopyrazines with clear positive solvatochromism were prepared.
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May 14, 2007
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| 1004-1010
Photocatalytic Overall Water Splitting on Gallium Nitride Powder
K. Maeda, K. Teramura, N. Saito, Y. Inoue, and K. Domen*
[Full Text PDF(J-STAGE)]
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GaN powder modified with Rh2−yCryO3 nanoparticles as a cocatalyst for H2 evolution were found to be an active and stable photocatalyst for overall water splitting under UV irradiation (λ > 300 nm).
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May 14, 2007
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| 1011-1016
Preparation and Characterization of a Layered Molybdenum Trioxide with Poly(o-anisidine) Hybrid Thin Film and Its Aldehydic Gases Sensing Properties
T. Itoh,* I. Matsubara, W. Shin, and N. Izu
[Full Text PDF(J-STAGE)]
Layered molybdenum trioxide with PoANIS ((PoANIS)xMoO3) hybrid thin film was formed by CVD and an intercalation process, in which sodium ions were exchanged for PoANIS into MoO3. The (PoANIS)xMoO3 hybrid thin film was investigated by gas-sensing properties analysis.
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May 14, 2007
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| 1017-1019
Degradation of Phenol under Visible Light Irradiation Using TiO2 with FeIII and Easy Sedimentation of TiO2 Particles
M. S. Nahar, K. Hasegawa,* S. Kagaya, and S. Kuroda
[Full Text PDF(J-STAGE)]
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The combined photocatalytic system (P25 TiO2 + Fe(ClO4)3) was visible light active, and phenol degradation was significantly increased. The reason is discussed based on the catalytic cycle of FeIII/FeII. The suspended TiO2 particles were easily sedimented by neutralizing the suspension.
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