The first F-19, C-13 single- and multi-bond 2D NMR correlations using
fluorine detection methods are reported for a perfluorinated alkyl cha
in. These heteronuclear correlations are observed in perfluoroheptanoi
c acid and combined with F-19-decoupled C-13 data and homonuclear F-19
, F-19 COSY to derive a full set of unequivocal F-19 and C-13 assignme
nts. (C) Elsevier Science S.A.