Spektroskopi NMR karbon 13 atau 13C

Spektroskopi NMR karbon 13 atau 13C-NMR menghasilkan informasi struktur mengenai karbon-karbon dalam sebuah molekul organik. Pada spektrum 13C-NMR hanya C-13 yang memiliki spin pecahan (1/2) sehingga resonansi C-13 terjadi terutama di daerah 0–200 ppm pada medan bawah tetrametilsilan (TMS), setiap karbon 13C-NMR berlainan akan menghasilkan satu sinyal. Dengan pengamatan singkat spektrum 13C biasanya sudah dapat dikenali inti-inti yang tidak mengikat proton dari kuat serapan yang rendah. Dari spektrum 13C-NMR akan diperoleh informasi jumlah karbon dan jenis karbon. Karbon dalam bentuk C-sp3 umumnya akan muncul pada sinyal < 100 ppm, sedangkan C-sp2 muncul pada daerah > 100 ppm (Silverstein et al., 1986).

Results (English) 1:

Carbon-13 NMR spectroscopy or 13 c-NMR yields information about the carbon-carbon structure within an organic molecule. 13 c-NMR spectrum at just C-13 which have spin fractions (1/2) so that the C-13 resonance occurs primarily in the area of 0 – 200 ppm on the field under tetrametilsilan (TMS), each carbon 13 c-NMR signal will produce a different one. With 13 c spectra are usually brief observations can already known nuclei are not binding the proton from the powerful the uptake is low. 13 c-NMR spectrum of will obtained information on the amount of carbon and carbon type. Carbon in the form of C-sp3 will generally appear in the < 100 ppm signal, while C-sp2 appears in the > 100 ppm (Silverstein et al., 1986).

Results (English) 2:

NMR spectroscopy of carbon 13 or 13C-NMR yield information about the structure of the carbon-carbon in an organic molecule. In the 13C-NMR spectra only the C-13 which has a fractional spin (1/2) so that the C-13 resonance occurs mainly in the area of ​​0-200 ppm in the field below tetramethylsilane (TMS), 13C-NMR any different carbon will produce a signal. With brief observations 13C spectrum usually recognizable cores do not bind protons of strong absorption is low. Of 13C-NMR spectra to be obtained information on the number of carbon and carbon types. Carbon in the form of C-sp3 generally will appear on signal <100 ppm, whereas the C-sp2 appear in the area of> 100 ppm (Silverstein et al., 1986).