ORGANIC CHEMISTRY-PRINT MULTI TERM
ORGANIC CHEMISTRY-PRINT MULTI TERM
4th Edition
ISBN: 9781119832614
Author: Klein
Publisher: WILEY
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Chapter 15, Problem 76IP
Interpretation Introduction

Interpretation: The structure of a given molecular formula C6H10O4 to be predicted using spectrum details.

Concept Introduction:

1HNMR : The 1HNMR spectrum gives information on the different electronic environment of protons. The number of signal (proton types) generated in 1HNMR are predicted by performing symmetry operations (rotation or reflection symmetry).

The 13CNMR spectrum gives information on the different electronic environments of carbon. As like 1HNMR , the number of signals generated in 13CNMR are predicted by performing symmetry operations (rotation or reflection symmetry). Only chemical shift values are reported in the spectrum but not the multiplicity and integration values because the coupling between two neighboring 13C13C nuclei are weakly involved due to the low abundance of 13C isotopes of carbon atom.

HDI Calculation:

HDI=2(C)+2+N-H-X2whereCrepresentthenumberofcarbonNrepresentthenumberofnitrogenHrepresentthenumberofhydrogenXrepresentthenumberofhalogen.

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