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CH - Direktori File UPI

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NMR Deshielding oleh unsur elektronegatif<br />

δ- δ+<br />

Cl<br />

Unsur<br />

elektronegatif<br />

C H<br />

Proton yang tidak<br />

terperisai(deshielding)<br />

protons muncul pada<br />

low field<br />

δ- δ+<br />

NMR <strong>CH</strong>ART<br />

semakin deshielding<br />

•Klor menarik kerapatan elektron<br />

menjauh dari karbon yang juga<br />

mengimbas kerapatan elektron<br />

disekitar proton.<br />

•Unsur klor menyebabkan proton<br />

tidak terperisai ( “deshields”)<br />

Proton yang terperisai<br />

(shielding)akan muncul<br />

pada high field

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