nchez,
E. Leiva,*
S. A. Dassie,
and
A. M. Baruzzi
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nchez,
E. Leiva,*
S. A. Dassie,
and
A. M. Baruzzi
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and
Toshikatsu Sata
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Analitical and Inorganic
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-[Cr{M(aet)3
}2
]3+
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Jinsai Hidaka,
and
Ken-ichi Okamoto*
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kawa*
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Articles
Orgainc and Biological
=============================
-laminaribiosides
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Norio Nishi, and
Seiichi Tokura
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Shoichi Kusumoto,
Hiroyuki Kobayashi,
Yoshimichi Sai,
Ikumi Tamai,
and
Akira Tsuji
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Akira Mori,*,
Hitoshi Takeshita,
and
the late Tetsuo Nozoe
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ki,*
Hiroshi Ikeda, and
Shinji Toyota
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Copyright (C) 1998 The Chemical Society of Japan
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Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 521-534 (1998) [Vol. 71, No. 3, March, 1998]
Electrochemical lithium intercalation within carbonaceous materials has attracted much attention for use to produce anodes in rechargeable lithium batteries. This review article covers recent topics of the lithium intercalation, focusing on three fundamental aspects: intercalation processes, surface film formation, and lithium diffusion within carbons.
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Headline Articles
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 535-542 (1998) [Vol. 71, No. 3, March, 1998]
-Cyclodextrin has been found to form inclusion complexes with poly(alkyl vinyl ether)s of various molecular weights to give stoichiometric compounds in crystalline states. The complexes were characterized by IR, 1
H NMR, 13
C NMR, and X-ray, thermal and elemental analyses. The structures of the complexes are discussed.
=============================
Articles
General and Physical
=============================
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 543-548 (1998) [Vol. 71, No. 3, March, 1998]
Crystal structures have been determined for the indicated compounds. A combination of opposite polarity of the terminal groups and opposite direction of the central ester linkages results in almost the same crystalline and monolayered smectic A structures.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 549-554 (1998) [Vol. 71, No. 3, March, 1998]
nchez,
E. Leiva,*
S. A. Dassie,
and
A. M. Baruzzi
Some aspects of direct ion transfer across water/1,2-dichloroethane were analyzed using a very simple model based on thermodynamic considerations. It was concluded that ion solvation by water molecules may occur in some particular cases in the organic phase, delivering an important contribution to the Gibbs free energy of ion transfer between the aqueous and organic phases.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 555-562 (1998) [Vol. 71, No. 3, March, 1998]
and
Toshikatsu Sata
The thermal membrane potential (
) across anion-exchange membranes having benzyltrialkylammonium groups was measured. The order of ||
was Cl->Br->I-
, which corresponds to that of the B
-coefficient for viscosity. For large oxoanions ||
was NO3->IO3->SO42-
and the water term in
played an important role.
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 563-572 (1998) [Vol. 71, No. 3, March, 1998]
The reforming reactions of CH4 with CO2 on perovskite structural oxides, LaBO3 (B=Co , Ni, Fe, Cr), were examined. The reaction activity at 1073 K followed the order LaCoO3>LaNiO3>LaFeO3>LaCrO3 . During the reforming reaction both LaCoO3 and LaNiO3 catalysts were decomposed by reduction to Co or Ni metal and La2 O3 .
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 573-588 (1998) [Vol. 71, No. 3, March, 1998]
Hubbard models for four-site four-electron {4,4} systems are analytically solved to elucidate group-theoretical interrelationships between effective Hamiltonians for radical characters, metal clusters, Cu4 O4 , and so on. In order to show interrelationships, the electronic states with D4h , Td , and D3h symmetries are constructed by use of the magnetically ordered general spin orbitals which have been determined by the GHF calculations. The spin-optimized SCF solutions examined here are equivalent to the full CI wavefunctions satisfying both spatial and spin symmetries.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 589-596 (1998) [Vol. 71, No. 3, March, 1998]
For typical SN 1 substrates, such as 1-adamantyl bromide and t -butyl chloride, the pseudo-first-order reaction rates (k /s-1 ) increased exponentially with increasing concentration of LiClO4 , NaClO4 , Mg(ClO4 )2 , and Ba(ClO4 )2 . The larger positive effects of metal perchlorates were explained by the change in the solvent structure and the formation of ``stable'' carbocations.
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Articles
Analitical and Inorganic
=============================
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 597-601 (1998) [Vol. 71, No. 3, March, 1998]
In an aqueous acidic solution (pH 2.2-3.5) periodate ions reacted with tin(II), and the released iodate reacted with I-
as follows:
Alternatively, the released iodine was extracted into chloroform and reduced with sodium sulfite and the produced I-
was reacted with IO4
-
as follow:
These reactions were used for titrimetric and spectrophotometric determinations of tin(II).
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 603-608 (1998) [Vol. 71, No. 3, March, 1998]
N ,N -Dimethyl-4-(2-pyridylazo)aniline (PADA) significantly accelerated the extraction rate of Ni(II) with 1-(2-pyridylazo)-2-naphthol (Hpan). The ring closure process of Hpan in the coordination to Ni(pada)2+ adsorbed at the interface was found to be the rate-determining step by kinetic studies and molecular mechanics calculation.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 609-617 (1998) [Vol. 71, No. 3, March, 1998]
The overall catalase-like activity of H2
O2
disproportionation coupled with the Mn(III)-Mn(IV) cycle is in the following order: saltnOH>salen
saltnOCOPh>saltn
. The large activity for the saltnOH complex with the 1,3-diamine ligand suggests stabilization of the transition state for the formation of hydrogen-bondings among the Mn(IV) intermediates and H2
O2
. For the salen complex in the presence of the OH-
ion, the appearance of the reaction path involving not only the Mn(III)-Mn(IV) cycle, but also the Mn(II)-Mn(III) cycle, is due to the formation of the [Mn(salen)OH] complex.
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 619-629 (1998) [Vol. 71, No. 3, March, 1998]
The kinetics of cyclopalladation for the solvated palladium(II) complexes with N -benzyl triamine ligands are reported. The reaction mechanism is discussed on the basis of the solvent, kinetic isotope, and steric effects.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 631-636 (1998) [Vol. 71, No. 3, March, 1998]
A trinuclear molybdenum cluster complex [Mo3 S4 Cl4 (C5 H5 N)5 ] was synthesized by the excision reaction of Mo3 S7 Cl4 with PPh3 and pyridine. By the reaction of [Mo3 S4 Cl4 (C5 H5 N)5 ] with I2 in pyridine, [Mo3 S4 Cl3 (C5 H5 N)6 ]I was synthesized.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 637-645 (1998) [Vol. 71, No. 3, March, 1998]
Mononuclear copper complex with a tripodal tetradentate ligand, Htppa, has been prepared as a model of copper enzymes, whose structures and properties have been examined. Reaction of Cu(I)-Htppa with dioxygen gave CuII -O2 - species, and alternate bubblings of O2 /CO to the solution exhibited a reversible binding of O2 .
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 647-650 (1998) [Vol. 71, No. 3, March, 1998]
Gallium is extracted into carbon tetrachloride as an ion pair of Ga-5-sulfo-8-quinolinol (H2 QS) chelate anion with tetradecyldimethylbenzylammonium chloride (Zephiramine), and subsequently back-extracted into 0.3 cm3 of nitric acid solution. The detection limit for Ga is 0.29 ng dm-3 , based on 1500-fold preconcentration.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 651-656 (1998) [Vol. 71, No. 3, March, 1998]
Solvatochromic linear solvation energy relationships for solution of O2
in 27 solvents have been examined, and multiple linear regression equations for mole fraction solubility of O2
are developed based on solvent parameters 
H2
, 
*
, 
, and
.
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 657-660 (1998) [Vol. 71, No. 3, March, 1998]
An oligomeric calix[4]arene ionophore having medium molecular weight is promissing as a quasi-immobilized neutral carrier for durable sodium-ion-selective silicone-rubber-membrane electrodes.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 661-670 (1998) [Vol. 71, No. 3, March, 1998]
-[Cr{M(aet)3
}2
]3+
Jinsai Hidaka,
and
Ken-ichi Okamoto*
S-Bridged trinuclear complexes, [CrIII {M(aet)3 }2 ]3+ , (M=RhIII ( 1 ), IrIII ( 2 ); aet=NH2CH2CH2S- ) were newly prepared, and their isomers were characterized by the electronic absorption and CD spectra, the molar conductivity, and the magnetic susceptibility. A cyclic voltammogram in water showed a reversible redox couple (M(IV)/M(III)) and an irreversible reduction wave (Cr(III)/Cr(II)). The stabilities of the S-bridged MCrIII M complexes are also discussed.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 671-677 (1998) [Vol. 71, No. 3, March, 1998]
kawa*
A nitrosyl CoPb complex is oxidized with dioxygen to a nitro complex; both complexes are characterized by X-ray crystallography and NMR spectroscopies.
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Articles
Orgainc and Biological
=============================
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 679-683 (1998) [Vol. 71, No. 3, March, 1998]
-laminaribiosides
Norio Nishi, and
Seiichi Tokura
A novel tri-O
-benzylidene derivative of 1-thio-
-laminaribioside having an unusual eight-membered ring was prepared by acid-catalyzed trimolar benzylidenation of phenyl 1-thio-
-laminaribioside. A regioselective ring opening of the benzylidene acetal afforded partially protected disaccharides.
Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 685-691 (1998) [Vol. 71, No. 3, March, 1998]
The solvolyses of 1-[trans -2-(m - or p -substituted phenyl)-cyclopropyl]-1-methylethyl p -nitrobenzoates in 80% aqueous acetone were examined, giving rate constants and product distributions. The solvolyses proceed via two independent reaction pathways: One intermediate is the corresponding cyclopropylmethyl cation and the other is the homoallylic cation.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 693-697 (1998) [Vol. 71, No. 3, March, 1998]
9-(Tropylidenehydrazono)fluorene ( 1 ) was obtained by the reaction of 9-fluorenone hydrazone ( 2 ) with tropylium salt ( 3 ), accompanied by 9-fluorenone azine, 9-(benzylidenehydrazono)fluorene, and 9,9-ditropylfluorene. The amination of 1 occurred at the 2-position of the tropylidene moiety. The reaction of 1 with tosyl isocyanate afforded the [8+2 ] adduct.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 699-709 (1998) [Vol. 71, No. 3, March, 1998]
Shoichi Kusumoto,
Hiroyuki Kobayashi,
Yoshimichi Sai,
Ikumi Tamai,
and
Akira Tsuji
A basic peptide termed 001-C8 ( 1 ) was synthesized as a novel compound passing through the blood-brain barrier (BBB). Furthermore, a number of basic peptides as 001-C8 analogs were prepared for studying the relationship between structure and BBB permeability of peptides.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 711-716 (1998) [Vol. 71, No. 3, March, 1998]
Akira Mori,*,
Hitoshi Takeshita,
and
the late Tetsuo Nozoe
Irradiation of azulenequinones gave head-to-head dimers predominantly in polar solvents and head-to-tail dimers increased in less polar solvents. Methoxyazulenequinone gave four products, while others gave a single head-to-head dimer. The solvent polarity, substituent, and concentration reflected on the product distribution.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 717-721 (1998) [Vol. 71, No. 3, March, 1998]
Contrary to a recent report, phthalic anhydride reacts with diethylenetriamine in HOAc to give the corresponding bis(phthalimide), some amide, and little of its hydrogen phthalate salt. Linear triethylenetetramine gives amide of the corresponding bis(phthalimide) instead, and no rearranged isomers reported.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 723-734 (1998) [Vol. 71, No. 3, March, 1998]
Pd-catalyzed carbonylation of benzyl alcohol (
1
) and its analogs to phenylacetic acid (
2
) promoted by HI in aqueous systems has been achieved in excellent yields.
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Copyright (C)
1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 735-739 (1998) [Vol. 71, No. 3, March, 1998]
(RS )-Bromosuccinic acid [(RS )-BSA] was found to exist as a conglomerate at room temperature and to form a racemic compound at the melting point. The optical resolution by preferential crystallization gave (R )- and (S )-BSA of 81-93% optical purities. (RS )-BSA was also optically resolved using (1S ,2S )-2-amino-1-phenyl-1,3-propanediol, as a resolving agent, to afford (R )- and (S )-BSA of 99 and 83% optical purities, respectively.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 741-747 (1998) [Vol. 71, No. 3, March, 1998]
Unsolvated and aggregated lithiosilanes with Si-Si bonds have been synthesized via lithium-mercury exchange reactions in toluene. NMR spectroscopic studies reveal that the unsolvated lithiosilanes exist as the aggregated oligomers in a non-polar solvent, whereas those solvated by THF or Et2 O exist as monomers.
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1998 The Chemical Society of Japan
Bull. Chem. Soc. Jpn.,
71, 749-754 (1998) [Vol. 71, No. 3, March, 1998]
ki,*
Hiroshi Ikeda, and
Shinji Toyota
The selectivity in solvolysis of 2-bromoadamantane was found to be practically constant at various temperatures for a given alcohol, if the alcohol-water ratio of 1.0 : 0.8 was taken. The reciprocals of the S values, D 's, were proposed to be measures of the dimensiosolvatic effects for the solvent intervention into contact ion pairs.
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