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NMR Broad Band Spectrometer

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All Spectra Shown is for One Sample. The spectra of (n-Bu)3Sn-Si(CH3)3. was collected on our Anasazi EFT-60. FT-NMR Spectrometer: H-1 spectra. DEPT C-13 Spectra ... – PowerPoint PPT presentation

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Title: NMR Broad Band Spectrometer


1
NMR Broad Band Spectrometer
  • Slide show by
  • Mike Condren
  • Spectra Collected by
  • Craig Bradley
  • of Anasazi Instruments

2
All Spectra Shown is for One Sample
  • The spectra of (n-Bu)3Sn-Si(CH3)3
  • was collected on our Anasazi EFT-60
  • FT-NMR Spectrometer
  • H-1 spectra
  • DEPT C-13 Spectra
  • C-13 Spectra
  • Si-29 Spectra
  • Sn-117/Sn-119 Spectra

3
H-1 Spectra
(CH3-CH2-CH2-CH2)3Sn-Si(CH3)3 d g b
a e
e
Coupled to 117Sn 119Sn
d
Coupled to 29Si

a, b, g
4
DEPT C-13 NMR Spectra
Distortionless Enhancement by Polarization
Transfer (DEPT Spectroscopy)
  • Type C CH CH2 CH3
  • 135o 0 -
  • 90o 0 0 0
  • 45o 0
  • Normal

5
DEPT C-13 Spectra
(CH3-CH2-CH2-CH2)3Sn-Si(CH3)3 d g b
a e
g
b
d
a
e
6
C-13 Spectra
(CH3-CH2-CH2-CH2)3Sn-Si(CH3)3 d g b
a e
Coupled to both Sn nuclides
Coupling to 119Sn
Coupling to 117Sn
a
d
b
g
e
7
Changing to another Nucleus
  • Takes less than 5 minutes
  • Begin by typing the nucleus to be analyzed into
    the computer
  • Follow instructions on the upper right corner of
    monitor

8
Modifications to the Magnet Consol
9
Equipment for Changing Frequency
10
Probe Area
11
Sn-117/Sn-119 Spectra
(CH3-CH2-CH2-CH2)3Sn-Si(CH3)3 d g b
a e
Spinning side bands
Coupled to 29Si
Coupled to g C
Coupled to a C

b C and e C on Si
12
Si-29 Spectra
(CH3-CH2-CH2-CH2)3Sn-Si(CH3)3 d g b
a e
Coupling to 119Sn
Coupling to 117Sn
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