C-13 NMR化学シフトの図表化-マスターチャート
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- Material Type
- 記事
- Author/Editor
- 田中 誠之 他
- Author Heading
- Periodical title
- 分析化学 / 日本分析化学会 編
- No. or year of volume/issue
- 20(12) 1971.12
- Volume
- 20
- Issue
- 12
- Pages
- 1537～1542
- Publication date of volume/issue (W3CDTF)
- 1971-12
- ISSN (Periodical Title)
- 0525-1931
- ISSN-L (Periodical Title)
- 0525-1931
- Publication (Periodical Title)
- 東京 : 日本分析化学会
- Place of Publication (Country Code)
- JP
- Text Language Code
- jpn
- NDLC
- Target Audience
- 一般
- Holding library
- 国立国会図書館
- Call No.
- Z17-9
- Data Provider (Database)
- 国立国会図書館 : 国立国会図書館雑誌記事索引
- Bibliographic ID (NDL)
- 8443832
- Bibliographic Record Category (NDL)
- 632
- Summary, etc.
- In the investigation of the molecular structure of organic compounds, carbon-13 nuclear magnetic resonance spectrometry is becoming more important in many laboratories. This method can offer directly much information about the skeletal structure of organic compounds.<BR>The authors have investigated the tables of chemical shifts for the best utilization of C-13 NMR, and it was concluded that the tables were preferable from a point of view of analytical chemistry if they consisted of a master chart which should be applied to survey roughly the chemical shift ranges of all sorts of organic substances and a series of sub-charts in each of which the shifts of a certain restricted type of compounds were tabulated in detail.<BR>In this paper, the authors presented the master chart for the elucidation of <SUP>13</SUP>C-NMR chemical shifts.<BR>The chemical shifts of <SUP>13</SUP>C-NMR were greatly influenced by adjacent functions. This influence was usually observed to reach only the second neighbouring carbons with a very few exception.<BR>This striking characteristic of <SUP>13</SUP>C-NMR brought an idea that the description of the chemical shifts of α and β carbons with the s carbon may have advantage. It might enable the analysis of the chemical structure near s carbon.<BR>The references which were cited for the tabulation of C-13 NMR chemical shifts were listed in table I. Except the data which were ascertained doubtful, nearly 3000 chemical shifts were chosen for the tabulation from the references which were published during the last 11 years. On the data which were not yet published but admitted indispensable for the tabulation, the author's experimental results were applied.<BR>Fig. 1 showed general tendency of <SUP>13</SUP>C-NMR chemical shifts. According to Fig. 1, it was observed that sp<SUP>2</SUP> carbons resonated at lower field than sp<SUP>3</SUP> and carbons which followed functions of high electronegativity resonated lower. The chemical shifts of alkanes were in the range of 150 and 185 ppm from CS<SUB>2</SUB>, alkene carbons 40 to 90 ppm, and alkyne were at the intermediate range of alkane and alkene.<BR>Carbonyl and the centered carbon of allene resonated at the lowest field of all, although there occured a case that when the chemical shifts were removed due to hydrogen bonding, carbonyl carbons resonated in the range of -30 to 35 ppm.<BR>An example of application of the master chart was presented.最近11年間の欧文雑誌より<SUP>13</SUP>C核磁気共鳴の化学シフトのデータを採録し,実測値を加えて約3000のデータを整理して分析化学的見地からシフトの図表化を行なった.<BR>はじめに,各官能基別のサブチャートを作成し,このサブチャートを基にして多くの化合物の適用化を考えてマスターチャートを編集した.このマスターチャートを利用することにより,<SUP>13</SUP>C核磁気共鳴測定の際のシフト範囲を決めることができる.さらに,未知化合物の同定に関して推定範囲をかなり限定でき,その解析実例も示した.
- DOI
- 10.2116/bunsekikagaku.20.1537
- Access Restrictions
- インターネット公開
- Data Provider (Database)
- 科学技術振興機構 : J-STAGE
- Summary, etc.
- 最近11年間の欧文雑誌より<SUP>13</SUP>C核磁気共鳴の化学シフトのデータを採録し,実測値を加えて約3000のデータを整理して分析化学的見地からシフトの図表化を行なった.<BR>はじめに,各官能基別のサブチャートを作成し,このサブチャートを基にして多くの化合物の適用化を考えてマスターチャートを編集した.このマスターチャートを利用することにより,<SUP>13</SUP>C核磁気共鳴測定の際のシフト範囲を決めることができる.さらに,未知化合物の同定に関して推定範囲をかなり限定でき,その解析実例も示した.
- DOI
- 10.2116/bunsekikagaku.20.1537
- Access Restrictions
- インターネット公開
- Related Material (URI)
- Data Provider (Database)
- 国立情報学研究所 : CiNii Research
- Original Data Provider (Database)
- Japan Link Center雑誌記事索引データベースCrossrefCiNii Articles
- Bibliographic ID (NDL)
- 8443832
- NAID
- 130000942333