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Published byAlbert Bařtipán Modified over 9 years ago
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NMR I Spin-spinové interakce, 1 H NMR
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I S J 0 I S J = 0 A X A1A1 A2A2 A1A1 A2A2 BoBo E J = 0 J > 0 E4E3E2E1E4E3E2E1
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A1A1 A2A2 A 1 = A 2 A2A2 A1A1 A 2 A 1 A X A1A1 A2A2 A1A1 A2A2 BoBo E J = 0 J < 0 E4E3E2E1E4E3E2E1 A1A1 A2A2 A 1 A 2 J = 0 J > 0J < 0
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1singlets 1 1 dubletd 1 2 1triplet t 1 3 3 1kvartetq 1 4 6 4 1pentetp
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t dd dd
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q dt td ddd
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1 H NMR
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X (X-CH 3 ) elektronegativita Li1,0 R 3 Si01,8 H0,42,1 CH30,82,5 NH22,363,0 OH3,383,5 I2,162,5 Br2,702,8 Cl3,053,0 F4,254,0 1 H NMR - alkany
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7.08 6.55 6.70 7.08 6.55 1 H NMR - areny
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7.55 8.15 7.70 7.55 8.15 1 H NMR - areny
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1 H NMR – alkeny = 4 – 7.5 Alkyny = 2 – 3 Aldehydy = 9 – 11 Vyměnitelné protony (OH, SH, NH)
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+ D 2 O
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500 MHz 3 J = 6.8 Hz
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500 MHz 3 J = 6.8 Hz
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100 MHz 3 J = 6.8 Hz
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100 MHz
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500 MHz
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800 MHz
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