and
Tokuji Miyashita
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Articles
Applied and Materials
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and
Tokuji Miyashita
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Articles
General and Physical
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and
Masaru Nakahara*,
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and
Yukio Nishimura
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and
Michio Sorai
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and
Kazuo T. Nakamura
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Articles
Analitical and Inorganic
=============================
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Yan-An Zhang,
Tao Ye,
Wen-Xia Tang, and
Norikazu Ueyama
-Carbon Atom Hydrogen in Salting-in Effect on Tris(
-amino acidato)cobalt(III)
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Mikio Nakamura,
and
Noriaki Funasaki
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and
Ken-ichi Okamoto
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Articles
Orgainc and Biological
=============================
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and
Hiro-o Hamaguchi
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Chien-Yu Huang,
Teruo Kurihara,
Akira Mori,
Tadayoshi Morita,
(the late)
Hitoshi Takeshita,
and (the late)
Tetsuo Nozoe
-Amino Acid Esters from Carboxylic Esters and Nitrones
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and
Hiromichi Ohta
-Hydroxy Esters
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Articles
Applied and Materials
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5
,4
5
,6
5
-Cyclotriphosphazene and Its Inclusion Behavior of Iodine
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Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2643-2662 (2000) [Vol. 73, No. 12, December, 2000]
The inter-molecular electronic transitions in quasi one- and two-dimensional organic conductors studied by polarized reflection spectroscopy are reviewed. The following effects on the optical spectrum are discussed: the strong electron-electron interaction, coupling with intra-molecular vibration, mixing between the longitudinal and transverse excitations in an anisotropic material.
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Articles
Applied and Materials
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Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2663-2668 (2000) [Vol. 73, No. 12, December, 2000]
and
Tokuji Miyashita
Stern-Volmer plots of the europium(III) complex in fluoropolymer films were obtained. The KSV values of [Eu(tta)3 phen], [Eu(tta)3 ].2H2 O, [Eu(pta)3 ].2H2 O and [Eu(fod)3 ].2H2 O in film were estimated to be 0.015, 0.005, 0.002 and 0.003 %-1 , respectively. A highly sensitive oxygen sensor using [Eu(tta)3 phen] film has been developed.
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Articles
General and Physical
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Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2669-2673 (2000) [Vol. 73, No. 12, December, 2000]
The hydroxylation of ethane by an iron-oxo model of cytochrome P450 is described from DFT calculations. The oxygen rebound mechanism might be a reasonable hypothesis in some aspects if the active species is truly of the compound I type, a six-coordinate iron-oxo species.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2675-2678 (2000) [Vol. 73, No. 12, December, 2000]
Stoichiometric ion-pair formation between carboxylate anions on the particle surface and tetraoctylammonium cations caused a phase transfer of gold nanoparticles across a water/toluene interface. During the transfer, an improvement in the dispersibility and a decrease in the mean particle diameter were observed.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2679-2685 (2000) [Vol. 73, No. 12, December, 2000]
A systematic design for chiral molecules has been discussed in terms of three criteria, where the sphericity concept has been used as a key concept.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2687-2693 (2000) [Vol. 73, No. 12, December, 2000]
and
Masaru Nakahara*,
Hydrothermal reactions of concentrated CH2 Cl2 were investigated by 1 H, 2 H, and 13 C NMR. The mechanism of the reactions are discussed in terms of the hydrolysis intermediate, CH2 (OH)2 .
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2695-2702 (2000) [Vol. 73, No. 12, December, 2000]
We have applied an IR-UV double resonance laser-induced fluorescence technique to the measurement of OH concentrations in the troposphere, which exists in extremely low concentrations, ca. 106 molecules cm-3 , and plays a central role in the atmospheric chemistry.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2703-2712 (2000) [Vol. 73, No. 12, December, 2000]
and
Yukio Nishimura
Chemical ionization of n -paraffins (Cx H2x+2 : x = 8 -18) by CH5+ , C2 H5+ , and C3 H5+ has been studied using an ion-trap type of GC/MS. In all the reactions, Cx H2x+1+ and Cy H2y+1+ (y = 3-x - 3 ) ions were observed. The reaction mechanism was discussed from the observed product-ion distributions.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2713-2718 (2000) [Vol. 73, No. 12, December, 2000]
and
Michio Sorai
Twist phase transitions of crystalline p -quinquephenyl at 264 K and of p -sexiphenyl around 295 K were detected by calorimetry. Properties of the twist transition in polymer is discussed on the basis of properties of the oligomers shorter than p -sexiphenyl.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2719-2724 (2000) [Vol. 73, No. 12, December, 2000]
Thermal electrons and negative oxygen ions produced by EB irradiation decomposed approximately 90% of 10 ppm CCl4 in dry air at 18 kGy. In the presence of water, the formation of O2- (H2 O)n lowered the decomposition by 20%.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2725-2726 (2000) [Vol. 73, No. 12, December, 2000]
and
Kazuo T. Nakamura
The crystal structure of N
,N'
-distearyl-1,4-diazabicyclo [2.2.2]octane dibromide is orthorhombic (Pna
21
) with cell dimensions of a = 63.851
(9), b = 9.156
(7), c = 8.366
(6) 
and Z = 4
.
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2727-2728 (2000) [Vol. 73, No. 12, December, 2000]
The chemical shifts, determined using an external reference and corrected for the upfield shift proportional to the
-cyclodextrin concentration, are in excellent agreement with those obtained using an internal, inert reference.
=============================
Articles
Analitical and Inorganic
=============================
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2729-2732 (2000) [Vol. 73, No. 12, December, 2000]
Transport of an amphoteric electrolyte, such as an amino acid through a charged mosaic membrane having two different fixed charges was examined. The composite membrane permeated the amino acids according to the ionic states in aqueous solution, rather than the molecular sizes.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2733-2738 (2000) [Vol. 73, No. 12, December, 2000]
Yan-An Zhang,
Tao Ye,
Wen-Xia Tang, and
Norikazu Ueyama
Reactions of 4' -cyanobenzyl-1-imidazole with Cd(NO3 )2 , Co(NO3 )2 and Ni(NO3 )2 gave mononuclear complexes, respectively. The metal ion was coordinated by imidazole groups, while the cyano groups were free of coordination. The crystal structures and NMR spectral characterization are reported.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2739-2746 (2000) [Vol. 73, No. 12, December, 2000]
-Carbon Atom Hydrogen in Salting-in Effect on Tris(
-amino acidato)cobalt(III)
Salting-in effect of NaBr on tris(amino acidato)cobalt(III) ([Co(aa)3
]) seems to arise from hydrophilic interaction of carbonyl groups in [Co(aa)3
] with surroundings. The interaction is enhanced by activated
-carbon hydrogens of amino acids in [Co(aa)3
].
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2747-2752 (2000) [Vol. 73, No. 12, December, 2000]
EXAFS of I K -edge have been obtained for I- dissolved in various solvents. Oscillation amplitudes of the EXAFS evaluated from the peak intensities in the Fourier-transform spectra were found to correlate with the Mayer-Gutmann acceptor number (AN ) of solvents studied.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2753-2757 (2000) [Vol. 73, No. 12, December, 2000]
1,4-Benzoquinone exhibited an anomalous electrochemical behavior upon the addition of a trace amount of silver ion. The concentrations of silver ion in voltammograms increase in the order, a, b, c, and d. This behavior was investigated by electrochemical techniques.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2759-2765 (2000) [Vol. 73, No. 12, December, 2000]
Mikio Nakamura,
and
Noriaki Funasaki
Mono 1-methylimidazole intermediate appreciably accumulates during 1-methylimidazole binding to the corrphycenatoiron(III), in remarkable contrast with the known observations for porphyrinatoiron(III) complexes. Rationale for the finding was provided on the basis of corrphycene structure with a trapezoidal and narrower metallo cavity.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2767-2773 (2000) [Vol. 73, No. 12, December, 2000]
and
Ken-ichi Okamoto
The reaction of [Ni{Co(aet)2 (en)}2 ]Cl4 with excess CdCl2 produced a novel S-bridged CoIII CdII dinuclear complex molecule, [CdCl3 {Co(aet)2 (en)}]0 , from which S-bridged CoIII CdII CoIII trinuclear and (CoIII CdII CoIII )2 hexanuclear complex salts, [CdCl{Co(aet)2 (en)}2 ](NO3 )3 and [Cd2 Cl{Co(aet)2 (en)}4 ](NO3 )7 , were derived by treatments with NaNO3 in water.
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=============================
Articles
Orgainc and Biological
=============================
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2775-2778 (2000) [Vol. 73, No. 12, December, 2000]
An efficient and selective method for the deprotection of trimethylsilyl and tetrahydropyranyl ethers, ethylene acetals and ketals using oxone is reported.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2779-2782 (2000) [Vol. 73, No. 12, December, 2000]
A rhenium complexes catalyzed the alkylation of arenes with alkyl halides to give the corresponding mono- and dialkyl substituted arenes in moderate-to-good yields.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2783-2792 (2000) [Vol. 73, No. 12, December, 2000]
and
Hiro-o Hamaguchi
The efficiency of the pyrene-sensitized photodecomposition of N -phenylglycine (NPG) was enhanced by the addition of an electron acceptor. The mechanism for the rate enhancement is discussed on the basis of results obtained by using the laser flash photolysis technique.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2793-2803 (2000) [Vol. 73, No. 12, December, 2000]
Chien-Yu Huang,
Teruo Kurihara,
Akira Mori,
Tadayoshi Morita,
(the late)
Hitoshi Takeshita,
and (the late)
Tetsuo Nozoe
The PbO2
-oxidation of 2-azulenol derivatives in AcOH generated azulenoxy radicals, which recombined to [1,1'
-biazulene]-2,2'
(1H
,1'H
)-dimers and, from 5-substituted azulen-2-ol derivatives hexacyclic cage dimers via the [5+5] 
cycloaddition process.
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2805-2809 (2000) [Vol. 73, No. 12, December, 2000]
-Amino Acid Esters from Carboxylic Esters and Nitrones
The title amino acid derivatives were prepared in fair to good yields directly from carboxylic esters and nitrones when lithium or magnesium ester enolates were treated with nitrones in THF at -78 °C or in Et2 O at -20 to 0 °C, respectively.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2811-2818 (2000) [Vol. 73, No. 12, December, 2000]
Preparations of carboxamides and peptides are performed in high yields from free carboxylic acids and amines by dehydration condensation using di(2-pyridyl) carbonate (DPC) or O ,O' -di(2-pyridyl) thiocarbonate (DPTC) in the presence of a catalytic amount of 4-(dimethylamino)pyridine (DMAP).
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2819-2823 (2000) [Vol. 73, No. 12, December, 2000]
and
Hiromichi Ohta
(R )-Citronellal and citronellic acid were synthesized from (R )-citronellol by microbial oxidation. Also (S )-Citronellol and citronellic acid were derived from the low ee of (S )-citronellol by a double coupling system and microbial oxidation in an interface bioreactor, respectively.
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2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2825-2826 (2000) [Vol. 73, No. 12, December, 2000]
-Hydroxy Esters
Diisopropylzinc is found to be a highly efficient reagent for the formation of zinc enolates from various iodoacetates via iodine-zinc exchange reaction at room temperature, affording
-hydroxy esters in high yields by the reaction with aldehydes and ketones.
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2827-2828 (2000) [Vol. 73, No. 12, December, 2000]
Sulfonimidoyl chlorides were allowed to react with aromatic hydrocarbons in the presence of Lewis acids to afford the corresponding diarylsulfoximines in good yield.
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Applied and Materials
=============================
Copyright (C)
2000 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
73, 2829-2833 (2000) [Vol. 73, No. 12, December, 2000]
5
,4
5
,6
5
-Cyclotriphosphazene and Its Inclusion Behavior of Iodine
Elemental analysis, FT-IR, fluorescence, and X-ray diffraction data showed that 2, 2, 4, 4, 6, 6-hexakis(4-pyridylmethoxy)-25
, 45
, 65
-cyclotri(phosphazene) and 1,4-naphthalenedicarboxylic acid form a cylindrical-shaped self-assembly with void capable of including iodine.
