a
i
,
Takeyuki Tanaka, and Isao Noda
Copyright (C) 2001 by The Chemical Society of Japan
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Accounts
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ai,
Takeyuki Tanaka, and Isao Noda
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Headline Articles
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Theoretical and Physical
Articles
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and Yoshiharu Usui
and Shoji Tanaka
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Analitical and Inorganic
Articles
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Sadamu Takeda,*,,
# Wasuke Mori,,
## Kazuhide Tani,
Kizashi Yamaguchi,
and Akira Nakamura
Ingrid Svoboda,
Hans-Georg Krane,
and Hartmut Fuess
kawa*
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Orgainc and Biological
Articles
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and Adrian V. George
Yuji Ohashi,
Masato Sakamoto,
Akio Yamamoto*,
and Toshikazu Takata*
and Kazuhiko Saigo
-Cyclodextrins
Bearing Two Pyrene Moieties
Yoshiaki Shirataki,
Hisayoshi Shiozaki,
Kazumasa Funabiki, Katsuyoshi Shibata, and Masaki
Matsui*
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Applied and Materials
Articles
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Wang Yuhua, Takao Saito, Norimitsu Tohnai,
and Mikiji Miyata
Copyright (C) 2001 The Chemical Society of Japan
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Accounts
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 1-17 (2001) [Vol. 74, No. 1,
January, 2001]
ai,
Takeyuki Tanaka, and Isao Noda
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This review aims at examining recent development in two-dimensional (2D) correlation spectroscopy. After a historical review of 2D correlation spectroscopy, a recently proposed efficient route to calculate 2D correlation spectra is reviewed. Examples of applications of 2D spectroscopy are also reported. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 19-29 (2001) [Vol. 74, No. 1,
January, 2001]
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Internuclear electronic interactions in conjugated ferrocene oligomers display unique redox and optical properties. Recent research on the dependence of such properties on the number of ferrocene nuclei and on the structure of conjugated spacers is reviewed. |
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Headline Articles
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 31-38 (2001) [Vol. 74, No. 1,
January, 2001]
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The tandem preconcentration/ICP-MS method with cooperative use of chelating resin adsorption and La coprecipitation has been investigated for the determination of trace elements in seawater. The concentrations of 32 elements in open seawater reference material (NASS-4) and coastal seawater, especially transition elements, all-rare earth, oxoanion-forming and hydride-forming elements, could be determined. |
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Theoretical and Physical
Articles
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 39-45 (2001) [Vol. 74, No. 1,
January, 2001]
and Yoshiharu Usui
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C60-photosensitized reduction system of methyl viologen (1,1'-dimethyl-4,4'-bipyridinium; MV2+) electron-mediated by O2 in aerated/deaerated organic solution was demonstrated. By the steady-state photolysis of C60, methyl viologen cation radical (MV.+) is formed in the presence of electron donor (D). |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 47-52 (2001) [Vol. 74, No. 1,
January, 2001]
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New equations for predicting the specific (Eq. 1) and apparent molar heat (Eq. 2) capacities of multicomponent solutions obeying linear isopiestic relations from the data of their binary sub-systems have been established and proven to be able to provide very accurate predictions for the seven systems. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 53-58 (2001) [Vol. 74, No. 1,
January, 2001]
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Three kinds of charge-transfer complexes of PXX have been prepared and structurally characterized. The molecular geometry change by the formal charge on PXX has been found to be consistent with the distribution of the HOMO coefficients. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 59-65 (2001) [Vol. 74, No. 1,
January, 2001]
and Shoji Tanaka
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Tetrathiapentalene derivatives with long alkyl chains, CnTET-TTP (n = 2-4), have been synthesized. These donors form charge transfer complexes, which show different crystal structures or conductive properties according to the length of the alkyl chains. |
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Analitical and Inorganic
Articles
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 67-75 (2001) [Vol. 74, No. 1,
January, 2001]
Sadamu Takeda,*,,
# Wasuke Mori,,
## Kazuhide Tani,
Kizashi Yamaguchi,
and Akira Nakamura
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Linearly aligned tetranuclear Pt(II)-Cr(II)-Cr(II)-Pt(II) complexes, i.e., Cr2Pt2Me4(pyphos)4 (2), Cr2Pt2Cl4(pyphos)4 (3), and Cr2Pt2Cl2Me2(pyphos)4 (4), were prepared using a tridentate pyphos ligand (pyphos = 6-diphenylphosphino-2-pyridonate), and their bonding between Cr(II) and Pt(II) was demonstrated on the basis of magnetic measurements to be controlled by the kind of substituents on the platinum(II) atoms. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 77-83 (2001) [Vol. 74, No. 1,
January, 2001]
Ingrid Svoboda,
Hans-Georg Krane,
and Hartmut Fuess
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A phase transition of pyridinium tetrabromoantimonate having a hypervalent bond was studied. A characteristic deformation of the SbBr4- anion below Ttr (251 K) is clearly seen on their bond lengths and the structure is stabilized by forming hydrogen bonds. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 85-95 (2001) [Vol. 74, No. 1,
January, 2001]
kawa*
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Di- |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 97-98 (2001) [Vol. 74, No. 1,
January, 2001]
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The reaction of [Zn(aet)2] (aet = 2-aminoethanethiolate) with Zn(ClO4)2.6H2O in aqueous acetonitrile gave an S-bridged hexanuclear complex, [{Zn(aet)} 4{Zn(aet)2}2] 4+. In the hexanuclear complex, all of the Zn and S atoms are contained in the Zn3S3- and/or Zn4S4-cyclic structures. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 99-100 (2001) [Vol. 74, No. 1,
January, 2001]
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A tetranuclear zinc(II) complex with 2,6-bis(salicylideneaminomethyl)-4-methylphenol (H3L) and pyrazole (Hpz), [Zn4(L)2(pz)2].2CH3CN, was synthesized and characterized by 1H NMR spectroscopy and a single-crystal X-ray diffraction method. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 101-102 (2001) [Vol. 74, No. 1,
January, 2001]
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1,3-Bis(salicylideneamino)-2-propanol (H3salpro) and 1,3-bis(salicylidene-amino)propane (H2salpn) react with Zn(ClO4)2.6H2O and pyrazole (Hpz) to give tetranuclear complexes with a linear Zn4 array, [Zn4(Hsalpro)2(pz)2(Hpz)2]-(ClO4)2 and [Zn4(salpn)2(pz)2(Hpz)2](ClO4)2, which were characterized by infrared spectra and X-ray crystallography. |
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Orgainc and Biological
Articles
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 103-111 (2001) [Vol. 74, No. 1,
January, 2001]
and Adrian V. George
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Kinetic effects of pressure on thermal Z/E isomerization of DOCI and DODCI were studied in ethanol and 2-methylpentane-2,4-diol (MPD). Dynamic solvent effects observed in MPD clearly demonstrated that the medium and the chemical coordinates have to be treated separately. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 113-122 (2001) [Vol. 74, No. 1,
January, 2001]
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An effective method for the preparation of 8-membered ring enone, a key inter-mediate of Taxol synthesis, that started from D-pantolactone was accomplished. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 123-137 (2001) [Vol. 74, No. 1,
January, 2001]
Yuji Ohashi,
Masato Sakamoto,
Akio Yamamoto*,
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The platinum-catalyzed bis-germylation of alkynes with organodigermanes and cyclic oligogermanes was examined. Bis(germyl)platinum complexes having various tertiary phophine ligands were prepared as models of a key intermediate, and their structures were established by spectroscopic methods and X-ray crystallography. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 139-147 (2001) [Vol. 74, No. 1,
January, 2001]
and Toshikazu Takata*
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A borane reduction of various secondary amide [2]catenanes and a [2]rotaxane gave the corresponding secondary amine [2]catenanes and [2]rotaxane. The mobility of their components was examined and classified in terms of 1H NMR spectroscopy. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 149-155 (2001) [Vol. 74, No. 1,
January, 2001]
and Kazuhiko Saigo
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N-Alkylation of a secondary amide [2]catenanes and a [2]rotaxane gave the corresponding tertitary amides and borane reduction of the amides gave the corresponding tertitary amines. The mobility of their components was examined and classified in terms of 1H NMR spectroscopy. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 157-164 (2001) [Vol. 74, No. 1,
January, 2001]
-Cyclodextrins
Bearing Two Pyrene Moieties
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 165-172 (2001) [Vol. 74, No. 1,
January, 2001]
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Novel heterogenized Pd catalyst, Pd(II)-hydrotalcite, has been synthesized. The catalyst is effective for the oxidation of allylic alcohols using molecular oxygen without any isomerization of an alkenic part. The catalyst can be used several times. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 173-177 (2001) [Vol. 74, No. 1,
January, 2001]
Yoshiaki Shirataki,
Hisayoshi Shiozaki,
Kazumasa Funabiki, Katsuyoshi Shibata, and Masaki
Matsui*
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The title compound was conveniently synthesized and
identified by a HMBC study. The detection limit (S/N > 3)
of carnitine was ca. 12 fmol. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 179-180 (2001) [Vol. 74, No. 1,
January, 2001]
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Substituted 4-bromophenols can be synthesised efficiently by refluxing the corresponding phenol in either neat diethyl bromomalonate (1) or diethyl dibromomalonate (2). We discuss the regioselectivity of bromination and comment on the scope and limitation of this procedure. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 181-182 (2001) [Vol. 74, No. 1,
January, 2001]
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Secondary sulfate having a primary hydroxyl group was prepared by a desulfation method using silylating agents. Stabilization of the intermediate seems to govern the reaction. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 183-184 (2001) [Vol. 74, No. 1,
January, 2001]
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The titration of Cu-containing nitrite reductase with azide ion indicates that two azide ions are coordinated to type 2 Cu(II). The azide-binding pentacoordinate Cu(II) site shows a charge-transfer band near 450 nm. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 185-186 (2001) [Vol. 74, No. 1,
January, 2001]
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The addition of ethynylbenzene to ketones proceeded efficiently in the absence of a solvent to give tertiary alkynols in good yields. |
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Applied and Materials
Articles
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 187-192 (2001) [Vol. 74, No. 1,
January, 2001]
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Calcium, strontium, barium and lead hydroxyapatites have been investigated by XRD, XPS, XAFS and solid state NMR to compare effects of cations on those spectra. |
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Copyright (C) 2001 The Chemical Society of Japan
Bull. Chem. Soc. Jpn., 74, 193-200 (2001) [Vol. 74, No. 1,
January, 2001]
Wang Yuhua, Takao Saito, Norimitsu Tohnai,
and Mikiji Miyata
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Crystal structures of the ester derivative of thymine were found to be affected particularly by the carbon number of the alkyl chains. Unusual hydrogen bonding between N3-H and O2 of thymine was observed for the derivatives having odd-numbered alkyl chains. |
-acetato-
ex:
454 nm, 
