Premium
Die NMR‐Spektren von CF 3 I, CF 3 IF 2 und CF 3 IF 4
Author(s) -
Tyrra Wieland,
Miczka Markus,
Naumann Dieter
Publication year - 1997
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19976231206
Subject(s) - chemistry , nmr spectra database , spectral line , acetonitrile , chemical shift , coupling constant , nuclear magnetic resonance spectroscopy , crystallography , oxygen 17 , carbon 13 nmr , analytical chemistry (journal) , nuclear magnetic resonance , stereochemistry , physics , organic chemistry , particle physics , astronomy
The NMR Spectra of CF 3 I, CF 3 IF 2 , and CF 3 IF 4 The 19 F‐NMR and 13 C‐NMR spectra of CF 3 I, CF 3 IF 2 and CF 3 IF 4 were recorded in acetonitrile solution. The chemical shifts of the CF 3 ‐groups are strongly dependent on the oxidation state of the iodine atom. With increasing oxidation state the resonances of the CF 3 ‐groups in the 19 F‐NMR spectra are characteristically shifted to high field, whereas in the 13 C‐NMR spectra a characteristic shift to low field is measured. The absolute value of the coupling constants 1 J( 19 F 13 C) increases with increasing oxidation state from 344 Hz (CF 3 I) via 354 Hz (CF 3 IF 2 ) to 359 Hz (CF 3 IF 4 ).