Espectroscopia cia Magnetica Nuclear de Protones_2omarambi
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Transcript of Espectroscopia cia Magnetica Nuclear de Protones_2omarambi
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13.1 Introducción
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13.2 Introducción a la teoría de la resonancia
magnética nuclear
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13.3 Apantallamiento magnético por parte de los
electrones
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13.4 El espectrómetro de resonancia magnética
nuclear (RMN)
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13.5 El desplazamiento químico
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13.6 El número de señales en el espectro RMN
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13.7 El área de los picos en el espectro RMN
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13.8 Desplazamiento espín - espín
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“tres enlaces”
“cuatro o más enlaces”
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C6H12O2
a
a
a
aÍndice de deficiencia de hidrógeno (IDH):
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1. Determinar cuantos tipos de protones están presentes en el espectro.
3. Calcular el índice de deficiencia de hidrógenos (IDH)
5. Escribir las Asignaciones cada una de las señales del espectro, de acuerdo con su
desplazamientos químicos.
4. Asociar las multiplicidades (desdoblamiento) de las señales con la estructura del compuesto
C6H12O2
2. Calcular la relación mínima de integración y la cantidad de hidrógenos de cada tipo en la estructura.
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13.9 Acoplamientos complejos
Jab = 17Hz
Jac = 11 Hz
Jcd = 1.4Hz
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Dados los siguientes espectros de RMN-1H, escribir las asignaciones
para cada una de las señales de los espectros, de acuerdo con su
desplazamientos químicos.
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Estireno (Ar-CH=CH2)
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C4H802
(CH3)2CHCOOH
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C4H100
(CH3)2CH2OH
1
2
1
3
3
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Fin
Espectrometría de Resonancia Magnética Nuclear de Protones