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Spectroscopic study of novel cluster structures created as chemical intermediates in supersonic molecular beams

Spectroscopic study of novel cluster structures created as chemical intermediates in supersonic molecular beams
超音速分子束中作为化学中间体产生的新型簇结构的光谱研究
批准号:
20550005
负责人:
MIKAMI Naohiko
金额:
$3.24万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2009
资助国家:
日本
项目状态:
已结题
起止时间:
2009 至 2010

项目摘要

项目成果

MIKAMI Naohiko的其他基金

相关文献

中文摘要
翻译
对喷射冷却的分子团簇阳离子进行了光谱研究,研究了以下体系:1。[C_6H_6(NH_3)_n]^+(n=1和2)的红外光谱和电子光谱表明,它们的稳定形式为S-络合物型,其中氨部分与苯部分共价键合,是芳烃亲核取代反应的中间体。结合量子化学计算,研究了[苯-(甲醇)_n]^+(n=2,3)的类似结构.用红外光谱研究了H^+(H_2O)_n(n=20-200)的氢键网络结构。结果表明,随着团簇尺寸的增大,团簇的光谱特征逐渐变得与水和冰的特征相似,表明大尺寸团簇的网络形态逐渐向块状团簇的网络形态转变。利用真空紫外单光子电离红外光谱研究了丙酮和乙酸的中性和阳离子团簇的结构。结果表明,许多团簇,如它们的二聚体,在电离后产生酮-烯醇跃迁,而它们的中性体是酮-形式。从质子亲合势和质子转移坐标的势能面讨论了异构化机理。
英文摘要
Spectroscopic studies on jet-cooled molecular cluster cations have been carried out for the following systems ;1. IR and electronic spectroscopy of [C_6H_6(NH_3)_n]^+ (n=1 and 2) revealed that their stable forms are of s-complex type, in which the ammonia moiety is covalently bonded to the benzene moiety as expected as the reaction intermediate of nucleophilic substitution of aromatics. The similar structures of [Benzene-(Methanol)_n]^+ (n=2, 3) were also investigated in combination with quantum chemical calculations.2. H-bond network structures of H^+(H_2O)_n (n=20-200) were investigated by IR spectroscopy. It was found that the spectral features of the clusters with increasing cluster size become similar to the characteristic features of water and of ice, indicating the network morphology of the large-size clusters transmutes gradually to those of the bulk systems. It was also found that the spectral feature depends on the internal energy in the species.3.Structures of neutral and cationic clusters of acetone and of acetic acid were investigated by using IR spectroscopy based on vacuum-ultraviolet one-photon ionization detection. It was found that the keto-enol transition is generated after the ionization for many clusters, such as their dimers, whereas their neutrals are of the keto-form. The isomerization mechanism was discussed in relation to their proton affinities and the potential surface of the proton-transfer coordinate.
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会议论文
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者: [水瀬賢太, 三上直彦, 藤井朱鳥]
通讯作者: 藤井朱鳥
真空紫外一光子でイオン化されたアセトンおよびその二量体の構造
真空紫外单光子电离的丙酮及其二聚体的结构
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者: [花上謙一, 松田欣之, 太田圭亮, 三上直彦, 藤井朱鳥]
通讯作者: 藤井朱鳥
水素結合の不思議招待講演
氢键奇迹特邀讲座
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者: [Konuma N, Matsumoto T, Iribe Y, 他, 三上直彦]
通讯作者: 三上直彦
酢酸の水素結合クラスターの真空紫外光イオン化検出赤外解離分光
乙酸中氢键簇的真空紫外光电离检测红外解离光谱
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者: [太田圭亮, 松田欣之, 藤井朱鳥, 三上直彦]
通讯作者: 三上直彦
43
    Laser spectroscopic study on hydrogen-bon-network structures of water-solvated clusters
    • 批准号:
      16002006
    • 项目类别:
      Grant-in-Aid for Specially Promoted Research
    • 资助金额:
      $190.2万
    • 财政年份:
      2004
    • 负责人:
      MIKAMI Naohiko
    • 依托单位:
    Development of multidimensional mass spectrometry combined with laser photodissociation spectroscopy
    • 批准号:
      10554028
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $7.55万
    • 财政年份:
      1998
    • 负责人:
      MIKAMI Naohiko
    • 依托单位:
    Instrumatational development of laser spectroscopic analyzer for mass-selected RF ion trapped species
    • 批准号:
      06554024
    • 项目类别:
      Grant-in-Aid for Developmental Scientific Research (B)
    • 资助金额:
      $6.08万
    • 财政年份:
      1994
    • 负责人:
      MIKAMI Naohiko
    • 依托单位:
    Laser spectroscopic study of intracluster chemical reactions
    • 批准号:
      05403004
    • 项目类别:
      Grant-in-Aid for General Scientific Research (A)
    • 资助金额:
      $25.02万
    • 财政年份:
      1993
    • 负责人:
      MIKAMI Naohiko
    • 依托单位: