Signs of proximate 31P, 19F and 19F, 19F spin–spin coupling constants in 2-trifluoromethylphenyldifluorophosphine |
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| Authors: | Ted Schaefer Kirk Marat Alberta Lemire Alexander F Janzen |
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| Abstract: | In 2-trifluoromethylphenyldifluorophosphine the proximate couplings 4J(19F31P) and 5J(19F19F) are + 68.3 and + 8.3 Hz, respectively. 1J(13C31P) is ?57.0 Hz, 2J(13C-1, 10F) is + 9.9 Hz and 2J(13C-6, 13C-6, 31P) is + 10.1 Hz. The trifluoromethyl substituent induces substantial changes in some coupling constants, particularly those between the 31P and ring 13C nuclei. |
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