Φασµατοσκοπία nmr - Τμήμα Χημείας · an experimental approach second...
TRANSCRIPT
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Απόστολος Σπύρος
Γ-207, ισόγειο κτιρίου Χηµείας[email protected]. 2810 545085
http://www.chemistry.uoc.gr/aspyros
Φασµατοσκοπία NMR
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CH4
1H NMR spectroscopy
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CH3Cl
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Homonuclear coupling
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Nuclear spin coupling, the N+1 rule
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Assign. Shift(ppm)
A 3.687
B 2.61
C 1.226
Homonuclear coupling
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Assign. Shift(ppm)
A 1.22
B 2.63
C 7.0 to 7.45
Toluene
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CH3ClCH3F
Heteronuclear coupling
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1.1.1Proton NMR Spectrum of the Model Compound 1
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Heterodecoupling31P
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Homodecoupling1H
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1.1.2 Field Dependence of the Spectrum of 1
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1.1.3FID Manipulation: FT, EM, SINE BELL (CH 2 Signal of 1)
LB = -0.3
Sine bell function
LB = 0.8
LB = 1.9
Raw FID
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LB = -0.3
Sine bell function
LB = 0.8
LB = 1.9
Raw FID
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CDCl3
D2O
D2O/H2O
Water presaturation
Digital filter
1.1.4The Proton Spectrum of 1 in D 2O or H 2O/D2O Mixtures
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1.1.5Integration: Relaxation, T 1, 90°-Pulse, Ernst Angle
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1.1.6The NOE: Through-Space Interactions between Protons
NOE Difference Spectroscopy
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1D NOESY
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1D NOESY
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1D TOCSY
Normal 1H NMR
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1D TOCSY