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Vol. 79, No. 9 (September, 2006)
[PDF version]
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Web Release Date:
September 5, 2006
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1315-1321
Construction of Carbon Frameworks through β-Carbon Elimination Mediated by Transition Metals
M. Murakami,* M. Makino, S. Ashida, and T. Matsuda
[Full Text PDF(J-STAGE)] Free Access Article
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New catalytic reactions of cyclobutanones have been developed, in which rhodium(I) and nickel(II) cyclobutanolates undergo ring opening through β-carbon elimination. The ring-opening process was applied to ring-expansion reactions forming six- and seven-membered ring ketones.
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| Web Release Date:
September 5, 2006
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1322-1337
Synthesis of Various Types of Nano Carbons Using the Template Technique
T. Kyotani
[Full Text PDF(J-STAGE)] Free Access Article
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The template carbonization technique allows one to prepare one- and three-dimensional carbons such as carbon nanotubes and nano porous carbons, and to control and modify their structure at the nanometer level.
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| Web Release Date:
September 5, 2006
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1338-1346
Photoinduced Electron Transfer of Dialkynyldisilane-Linked Zinc Porphyrin–[60]Fullerene Dyad
H. Tsuji,* M. Sasaki, Y. Shibano, M. Toganoh, T. Kataoka, Y. Araki, K. Tamao,* and O. Ito*
[Full Text PDF(J-STAGE)] [Supporting Information] Free Access Article
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A zinc porphyrin–fullerene dyad with a disilane as a σ-conjugated linker has been newly synthesized. Photoinduced electron transfer and energy-transfer processes of the dyad were revealed by time-resolved fluorescence and transient absorption measurements.
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| Web Release Date:
September 5, 2006
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1347-1354
The Effects of Chloride Salts of Some Cations on the Molecular Organization of H2O. Towards Understanding the Hofmeister Series. II
Y. Koga,* H. Katayanagi, J. V. Davies, H. Kato, K. Nishikawa, and P. Westh
[Full Text PDF(J-STAGE)] [Supporting Information]
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We found that Ca2+, and NH4+ are hydrated by 6.4 ± 1.6, and 1.2 ± 0.4 molecules of H2O and the bulk H2O away from the hydration shell stayed unaffected. (CH3)4N+ showed a hydrophilic propensity.
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| Web Release Date:
September 5, 2006
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| 1355-1361
Further Study on the Micellization of a Symmetric Amphiphile Using the Monte Carlo Technique
H. Gharibi, R. Behjatmanesh-Ardakani,* S. M. Hashemianzadeh, B. Sohrabi, and S. Javadian
[Full Text PDF(J-STAGE)]
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Using Metropolis Monte Carlo simulation in a lattice model, it is shown how the self-assembling of amphiphile molecules with only repulsion interactions can be simulated. A modified version of Larson’s model is used to investigate the temperature behavior of the self-assembling process. In this work, some physicochemical parameters such as critical micelle concentration, distribution of monomers in clusters, and premicellar phenomena are studied. For this goal H4T4 as a symmetric amphiphile in canonical ensemble is used.
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| Web Release Date:
September 5, 2006
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| 1362-1366
X-ray Analysis of Excited-State Molecular Structure of [AuCl(PPh3)2]
M. Hoshino, H. Uekusa, and Y. Ohashi*
[Full Text PDF(J-STAGE)]
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From X-ray crystal structure analysis of the title complex under photoirradiation with the mercury lamp, the excited-state structure, in which the Au–P and Au–Cl bond distances significantly decreased in comparison to the corresponding ones in the ground state, was determined.
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| Web Release Date:
September 5, 2006
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| 1367-1371
Hydration Structure around the Carbonyl Group of an Urea Molecule in Concentrated Aqueous Solutions Studied by Neutron Diffraction with 12C/13C Isotopic Substitution
Y. Kameda,* M. Sasaki, S. Hino, Y. Amo, and T. Usuki
[Full Text PDF(J-STAGE)]
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Neutron diffraction measurements were carried out on 12C/13C isotopically substituted aqueous 15 mol % urea heavy water solutions. Structural parameters concerning the hydration of the carbonyl group were obtained from observed intermolecular difference function, ΔCinter(Q).
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| Web Release Date:
September 5, 2006
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| 1372-1382
Magnetic Properties of 1:4 Complexes of CoIIX2 (X = NCO−, NCS−, and Br−) with 4-(N-tert-Butylaminoxyl)pyridine. Antiferromagnets in Crystalline States and Single-Molecule Magnets in Frozen Solutions
S. Kanegawa, S. Karasawa, M. Nakano, and N. Koga*
[Full Text PDF(J-STAGE)] [Supporting Information]
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Heterospin cobalt(II) complexes, [Co(X)2(4NOpy)4] (X = NCO−, NCS−, and Br−) with pyridine ligands with aminoxyls functioned as antiferromagnets in the crystalline state and as single-molecule magnets in the frozen solution.
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| Web Release Date:
September 5, 2006
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| 1383-1388
Structural and Spectral Features of Complex Salts Composed of [Ni(dmit)2]− and Four- or Six-Coordination Nickel(II) Complexes of Alkyl-Substituted Cyclam
Y. Soneta* and K. Miyamura
[Full Text PDF(J-STAGE)]
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[Ni(dmit)2]− salts of four- or six-coordination nickel(II) complexes of alkyl-substituted cyclams have been prepared. Spectral changes in the infrared region were found dependent on the coordination number of the cyclam complex.
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| Web Release Date:
September 5, 2006
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| 1389-1392
A Study on Zinc Isotope Fractionation in a Benzo Crown Resin/Acetone System
X. Ding,* T. Suzuki, M. Nomura, Y. Sugiyama, T. Kaneshiki, and Y. Fujii
[Full Text PDF(J-STAGE)]
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Zinc isotope fractionation using different benzo crown resin/acetone systems is studied. The cavity size of crown ethers is obviously affected zinc isotope separation.
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| Web Release Date:
September 5, 2006
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| 1393-1397
Synthesis and Structures of Vanadium–Cerium Trinuclear Complexes with Schiff-Base Ligands
M. Tsuchimoto,* T. Ishii, T. Imaoka, K. Yamamoto, N. Yoshioka, and Y. Sunatsuki
[Full Text PDF(J-STAGE)] [Supporting Information]
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A vanadium(V)–cerium(IV) trinuclear complex, [{VVO2(L1)}2CeIV] (1) was prepared, and the structure was determined by X-ray crystal structure analysis. The cyclic voltammogram of complex 1 in CH3CN shows a two-electron redox couple with E1/2 = −0.60 V vs Fc/Fc+.
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| Web Release Date:
September 5, 2006
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| 1398-1403
Mixed ReVII–FeIII and ReVII–CuII Complexes Prepared by the Use of the Complex Ligand [Re(O)3(tpenH-κ3N,N″,N″′)]2+ (tpen = N,N,N′,N′-Tetrakis(2-pyridylmethyl)ethylenediamine)
T. Tabeya, M. Abe,* and Y. Sasaki*
[Full Text PDF(J-STAGE)]
Reactions of the unique ReVII complex [ReVII(O)3(tpenH-κ3N,N″,N″′)](ClO4)2 (tpen = N,N,N′,N′-tetrakis(2-pyridylmethyl)ethylenediamine) with FeIII ions and Cu ions in solution afforded three new mixed-metal complexes, [{ReVII(O)3(μ-tpen-κ3N,N″,N″′:κ3N′,N″″,N″″′)}2FeIII2(μ-O)(μ-CH3COO)2]4+, [ReVII(O)3(μ-tpen-κ3N,N″,N″′:κ3N′,N″″,N″″′)CuII(CH3CN)]3+, and [ReVII(O)3(μ-tpen-κ3N,N″,N″′:κ3N′,N″″,N″″′)CuIICl]2+.
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| Web Release Date:
September 5, 2006
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| 1404-1406
Versatile Vapochromic Behavior Accompanied by a Phase Change between Charge-Polarization State and Charge-Density-Wave State in a Quasi-One-Dimensional Iodo-Bridged Dinuclear Platinum Mixed-Valence Compound, [{NH3(CH2)5NH3}2][Pt2(pop)4I]·4H2O
M. Yamashita,* K. Takizawa, S. Matsunaga, D. Kawakami, H. Iguchi, S. Takaishi, T. Kajiwara, F. Iwahori, T. Ishii, H. Miyasaka, K. Sugiura, H. Matsuzaki, H. Kishida, and H. Okamoto
[Full Text PDF(J-STAGE)] [Supporting Information] Open Access Article
This communication describes versatile vapochromic behavior that is accompanied by a phase change between charge-polarization (CP) and charge-density-wave (CDW) states with increasing and decreasing temperature in [{NH3(CH2)5NH3}2][Pt2(pop)4I]·4H2O (pop = P2H2O52−) (1).
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| Web Release Date:
September 5, 2006
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| 1407-1409
Atmospheric Acidic Pollutants at Mt. Tsukuba, Japan, Determined Using a Portable Filter Pack Sampler
M. Watanabe, T. Takamatsu, M. K. Koshikawa,* K. Sakamoto, and K. Inubushi
[Full Text PDF(J-STAGE)]
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Atmospheric concentrations of NOx, SOx, T–NO3, and T–Cl were measured using a portable filter pack sampler at Mt. Tsukuba, in the Kanto region of Japan. T–NO3 was relatively high at the mountainous sites.
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| Web Release Date:
September 5, 2006
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| 1410-1412
Investigation of a Tyrosinase-Immobilized Polyacrylamide Membrane Electrode in N,N-Dimethylacetamide
J. Ren, H. Takeda, and T. Nakamura*
[Full Text PDF(J-STAGE)]
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Tyrosinase-immobilized, hydrophilic polyacrylamide membrane electrode was used to investigate the enzymatic reaction of catechol derivatives in DMA, and the apparent Michaelis–Menten constants, Km,app, were determined. The method can be used for both monitoring enzymatic activity and solvent effect by repeated using only a small amount of the enzyme.
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| Web Release Date:
September 5, 2006
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| 1413-1419
Photochromism of Diarylethenes on Gold and Silver Nanoparticles
H. Yamaguchi, M. Ikeda, K. Matsuda,* and M. Irie*
[Full Text PDF(J-STAGE)]
Gold and silver nanoparticles capped with photochromic diarylethene ligands were synthesized and their photochromic reactivity was investigated. The metal nanoparticles underwent reversible photochromic reactions under irradiation with UV and visible light.
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| Web Release Date:
September 5, 2006
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| 1420-1425
Bactericidal Effect of Silica Gel-Supported Porphyrinatophosphorus(V) Catalysts on Escherichia coli under Visible-Light Irradiation
Y. Fueda,* H. Suzuki, Y. Komiya, Y. Asakura, T. Shiragami, J. Matsumoto, H. Yokoi, and M. Yasuda*
[Full Text PDF(J-STAGE)]
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Bactericidal effect of phosphorus porphyrin complexes immobilized on silica gel on Escherichia coli was investigated under visible-light irradiation. Kinetic analysis and stability test of the catalysts showed remarkable bactericidal activity with high stability.
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| Web Release Date:
September 5, 2006
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| 1426-1430
Benign and Efficient Synthesis of 2-Substituted 4(3H)-Quinazolinones Mediated by Iron(III) Chloride Hexahydrate in Refluxing Water
G.-W. Wang,* C.-B. Miao, and H. Kang
[Full Text PDF(J-STAGE)]
Condensation of aldehydes with anthranilamide in refluxing water using iron(III) chloride hexahydrate as an oxidant afforded 2-substituted 4(3H)-quinazolinones in good yields (77–93%). This method provides several advantages such as being environmentally friendly, simple work-up procedure, and high yields.
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| Web Release Date:
September 5, 2006
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| 1431-1443
Syntheses, Crystal Structures, and Single Small Molecule Encapsulation Properties of Cavitand-Porphyrins
J. Nakazawa, M. Mizuki, J. Hagiwara, Y. Shimazaki, F. Tani, and Y. Naruta*
[Full Text PDF(J-STAGE)] [Supporting Information]
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Encapsulation of various small guest molecules by “cavitand–porphyrin” (Mcp, M = H2, Zn, Ni, and Pd) has been evaluated by determining their binding constants and thermodynamic parameters. Mcps discriminate among guest sizes and coordinating functional groups in the process of encapsulation of molecules as large as cyclopropane, ethanol, and acetonitrile.
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| Web Release Date:
September 5, 2006
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| 1444-1446
Carbonylation of Organic Halides with Carbon Monoxide Mediated by Samarium Diiodide. Improvement and Mechanistic Investigations
Y. Tomisaka, N. Harato, M. Sato, A. Nomoto, and A. Ogawa*
[Full Text PDF(J-STAGE)]
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Under an atmospheric pressure of carbon monoxide, photoinduced reductive carbonylation of organic halides (RX) with samarium diiodide (SmI2) occurred to afford the corresponding unsymmetrical ketones (RC(O)CH2R) in good yields.
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| Web Release Date:
September 5, 2006
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| 1447-1450
Growth of CdWO4 Nanorods and Nanowires by a Surfactant Directed Adsorption Mechanism
Y. Zhang, G.-T. Zhou, Y. Liu, N. Gao, and Y. Qian*
[Full Text PDF(J-STAGE)]
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Single-crystal CdWO4 nanorods/nanowires with different growth orientations were selectively grown using the cationic surfactant CTAB or the anionic surfactant SDBS, respectively, as a directing adsorption agent under hydrothermal conditions. A general mechanism leading to 1D nanostructures is proposed.
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| Web Release Date:
September 5, 2006
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| 1451-1461
Vapor-Phase Ethylation of Biphenyl over MTW Zeolites
S. A. R. Mulla, S. B. Waghmode, S. Watanabe, H. Maekawa, K. Komura, Y. Kubota, Y. Sugi,* J.-H. Kim, and G. Seo
[Full Text PDF(J-STAGE)]
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The MTW zeolite gave the highest selectivity for 4,4′-diethylbiphenyl (4,4′-DEBP) (30–40%) among the zeolites in vapor-phase ethylation of biphenyl (BP). The formation of 4,4′-DEBP is the most favorable because of diffusion and restriction of transition state in the MTW channels.
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