Carbon-13 NMR Spectroscopy (OCR A-Level Chemistry A): Flashcards
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Reference compound in C NMR ()
Reference compound in C NMR ()
TMS (tetramethylsilane)
C=O carbon shift range in C NMR
C=O carbon shift range in C NMR
ppm
Aromatic/C=C carbon shift range
Aromatic/C=C carbon shift range
ppm
C-O, C-N, C-Cl, C-Br shift range
C-O, C-N, C-Cl, C-Br shift range
ppm
Saturated C-C bond shift range
Saturated C-C bond shift range
ppm
Peak count in C NMR shows
Peak count in C NMR shows
Number of different carbon environments
Equivalent carbon atoms definition
Equivalent carbon atoms definition
Same environment; symmetrically positioned
Max C NMR shift scale
Max C NMR shift scale
~220 ppm
Peaks in propanone () C NMR
Peaks in propanone () C NMR
2 (both groups equivalent)
Electronegative atom effect on C shift
Electronegative atom effect on C shift
Withdraws electrons; higher (deshielding)