主题:【求助】B-C偶合裂分

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gaobodongdong
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B-C偶合是否会显著降低C谱信号强度?
峰形该是什么?JC-B=?
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ufonmr
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the relaxation time T1 of the quadrupolar nuclei 11B is rapid (1/T1 ~= 2*pi*J), 13C next to 11B (T1 = 10e-1 to 10e-2s, J13C-11B = 20 to 80 Hz) is likely to produce broadened lines, except 11B is positioned at the centre of the molecule and experiences a fairly symmetrical
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gaobodongdong
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非常感谢您的回复。能不能进一步提供一些相关的参考资料?
ufonmr
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If the coupling is observable, 1:1:1:1 quartet is shown for a 13C bonded to 1 11B atom (3/2, 80%).

Magn Reson Chem. 2009 October; 47(10): 873–878.
doi:  10.1002/mrc.2467

http://www.znaturforsch.com/ab/v60b/s60b0259.pdf

http://www.chem.wisc.edu/areas/reich/nmr/notes-7-multi.pdf
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