1986 Fiscal Year Final Research Report Summary
Multiple Quantum Coherence NMR and its Application to Molecular Structure Study.
| Project/Area Number |
60840010
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
物理化学一般
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| Research Institution | Hokkaido University |
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Principal Investigator |
HIKICHI Kunio Hokkaido University Fac. of Science, Prof., 理学部, 教授 (30000805)
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| Co-Investigator(Kenkyū-buntansha) |
大内 宗城 日本電子(株), 分析機器本部, 研究員
江口 恵二 日本電子(株), 分析機器本部, 次長
IKURA Mitsuhiko Hokkaido University Fac. of Science, Assistant, 理学部, 教務職員 (00142688)
TOKITA Masayuki Hokkaido University Fac. of Science, Assistant, 理学部, 教務職員 (80163963)
EGUCHI Kenji JEOL Ltd.
OHUCHI Muneki JEOL Ltd.
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| Project Period (FY) |
1985 – 1986
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| Keywords | Nuclear Magnetic Resonance / Double Quantum Coherence / 2D-NMR / INADEQUATE / DECSY |
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| Research Abstract |
We developed the NMR method utilizing the multiple quantum coherence and applied it to the study of molecular structure. The multiple-relay correlation spectroscopy in which the single quantum coherence of a spin is transferred to other spins far apart four bonds was developed. This method was applied to cellooligosaccharides. It was found that this method is quite useful to separate out each single saccharide unit. Double quantum coherence echo correlated spectroscopy(DECSY) was developed. This method of 1H was applied to poly(vinyl alcohol) to determine equivalent methylene protons in the sequence of different stereoregularity. The <^(13)C> version of this method was also applied to the determination of stereoregularity of polypropylene oxide and the identification of cis and trans units of polybutadiene. Multiple quantum filter was utilized to separate out the two-spin system. Pure phase COSY became possible with double quantum filter. COSY with triple quantum filter was applied to poly (vinyl alcohol) to determine equivalent methylene protons.
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