Notes J. Org. Chem., Vol. 53, No. 4, 1988 885 except in the case of tetrafluorosuccinimide complexing with N-methylpyrrolidone, where they averaged 6% smaller. The extinction coefficients initially obtained for the complexes were always small and often slightly negative. The treatments were therefore repeated, to obtain the values listed, with the assumption that absorption by the complex was negligible. The old values were all within ...
