The Contact-term Contributions to Lanthanide-induced <SUP>13</SUP>C Paramagnetic Shifts in Acridine, Quinoline, and Isoquinoline
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概要
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<SUP>1</SUP>H and <SUP>13</SUP>C paramagnetic shifts induced by Eu(DPM)<SUB>3</SUB> and Pr(DPM)<SUB>3</SUB> in acridine, quinoline, and isoquinoline in CCl<SUB>4</SUB> are observed. It has been found that, while the <SUP>1</SUP>H shifts can be interpreted solely in terms of a pseudo-contact interaction, there is a much larger contact-term contribution to <SUP>13</SUP>C shifts induced by Eu(DPM)<SUB>3</SUB> than by Pr(DPM)<SUB>3</SUB> in these compounds; this contribution to the <SUP>13</SUP>C shifts cannot be explained by a simple combination of σ- and π-contact terms.
- 公益社団法人 日本化学会の論文
著者
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Hirayama Masatoshi
Department Of Chemistry Faculty Of Science Ibaraki University
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Hanyu Yoshiaki
Naka Works, Hitachi Co., Ltd.
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