Misc - KIMURA Noriyoshi

Valence structures and spin dynamics in one-dimensional mixed-metal complexes, [Cu(chxn)2] [PtX2(chxn)2]X4 (X: CI, Br)

Hiroshi Aoki, Kenji Kisoda, Noriyoshi Kimura （Part： Last author,　Corresponding author )

Bulletin of the Faculty of Education, Wakayama University. Natural science ( Faculty of Education, Wakayama University )  55   1 - 3   2005.02

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We measured the Raman, UV-visible and 13C CP-MAS NMR spectra of halogen-bridged 1-D Cu-Pt mixed-metal complexes, [Cu(chxn)2][PtX2(chxn)2]X4 (X: Cl and Br), consisting of -X-Cu-X-Pt-X-chain. The Raman spectra showed an overtone progression of symmetric stretching mode of Pt(IV) -Cl atoms and the fine structures with halogen isotopic splitting in Pt-Cl band below ca. 50 K. The broad carbon signals of the 13C NMR spectra observed at room temperature are attributable to strong paramagnetic effect from Cu(II) sites. This result is supported by the weak antiferromagnetic interactions between Cu(II) sites in the chain.

DOI

Comparison of high school education of chemistry between Myanmar and Japan

Naw Ruth, Noriyoshi Kimura, Wakako Kanda, Takeshi Negoro （Part： Corresponding author )

Bulletin of the Faculty of Education, Wakayama University. Educational science ( Faculty of Education, Wakayama University )  55   63 - 66   2005.02

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We studied comparison of high school education between Myanmar and Japan by using the textbooks of chemistry in high school, visiting schools and study tours. In both countries, the level of curriculum contents common. The contents of the textbooks are arranged systematically in order to the laws, principles, basic concepts, examples and explanations. There is a little difference in the explanation of each topic, some are details in Myanmar, but some are details in Japan. School chemistry can teach the students about the influence of chemical knowledge on human society.

DOI

Valence structure in one-dimensional binuclear complexes, A4[Pt2X(P2O5H2)4]・nH2O (A: K, NH4, Cs; X: Cl, Br, I), studied by nuclear magnetic resonance

Noriyoshi Kimura （Part： Corresponding author )

Bulletin of the Faculty of Education, Wakayama University. Natural science ( Faculty of Education, Wakayama University )  54   23 - 28   2004.02

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31P MAS NMR spectra were measured on -X-Pt-Pt-X-Pt-Pt-X- type complexes, A4[Pt2X(P2O5H2)4]・nH2O(A: K, NH4, Cs; X: Cl, Br, I). In these complexes, two kinds of 31P resonance lines observed at δ=50-70 and 20-40 ppm, whose values are close to those in the monomer Pt2+ and Pt3+ complexes, respectively. From the analyses of spectra and spin-lattice relaxation times T1, a mixed-valence -X-Pt2+-Pt2+-X-Pt3+-Pt3+-X- structure was concluded for K4[Pt2Cl(P2O5H2)4]・nH2O, (NH4)4[Pt2X(P2O5H2)4]・nH2O and Cs4[Pt2X(P2O5H2)4].

DOI

Comparison of secondary education of science between Myanmar and Japan

Naw Ruth, Noriyoshi Kimura, Wakako Kanda, Takeshi Negoro （Part： Corresponding author )

Bulletin of the Faculty of Education, Wakayama University. Educational science ( Faculty of Education, Wakayama University )  54   93 - 102   2004.02

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We, at present study, discuss the comparison of secondary education system of science between Myanmar and Japan in views of textbooks which are generally used at a junior high school.

DOI

13C solid NMR, ESR and IR studies on -M(II)-X-Pt(IV)-X- type complexes, [M(en)2][PtX2(en)2](NO3)4 (M: Pd, Pt; X: Cl, Br)

Noriyoshi Kimura, Junko Hasegawa, Kenji Kisoda, Ryuichi Ikeda （Part： Lead author,　Corresponding author )

Bulletin of the Faculty of Education, Wakayama University. Natural science   54   29 - 32   2004.02

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IR and 13C NMR measurements in hetero-metal complexes, [Pd(en)2][PtX2(en)2] (NO3)4 (X: Cl, Br) afforded two kinds of signals assignable to Pd and Pt moieties, indicating the formation of the Pd(II)-X-Pt(IV)-X-type chain structure. Weak ESR signal observed in [Pt(en)2][PtCl2(en)2] (NO3)4 suggested the formation of only small amounts of spin soliton.

DOI

Electron spin dynamics in a halogen-bridged one-dimensional mixed-valence complex, [Pd(en)2][PdCl2(en)2](ClO4)4 studied by 1H NMR and ESR

Noriyoshi Kimura, Ryuichi Ikeda （Part： Lead author,　Corresponding author )

Bulletin of the Faculty of Education, Wakayama University. Natural science ( Faculty of Education, Wakayama University )  52   47 - 55   2002.02