Nuclear Magnetic Resonance Shift Reagents: Abnormal C Shifts Produced by Complexation of Lanthanide Chelates with Saturated Amines and n-Butyl Isocyanide.
نویسندگان
چکیده
Lanthanide-induced shfits of (13)C nuclear magnetic resonances are reported for several amines and n-butyl isocyanide. Contact contributions to such shifts, especially of beta carbons, are clearly important for the chelates of Eu(+3) and Pr(+3). The importance of contact terms is shown to change in a rather predictable manner with the structure of the amine.
منابع مشابه
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ورودعنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 70 2 شماره
صفحات -
تاریخ انتشار 1973