n-Containing Compounds hitrogen atoeis are also distinguishable bry their Ik ate
ID: 693301 • Letter: N
Question
n-Containing Compounds hitrogen atoeis are also distinguishable bry their Ik ated by the IR spectys of an amine (octylamine inenitrile). Addi talis on the IR specera of these shift bonds in the HohNH sive rise to twe psions at 3300 and option 3. Below are three isomeric chlorobutanes and their "C NMR spectral data. MATCH the spectral data to the correct structures by placing the letter of the spectrum in the blank to the left of the corresponding structure. a - 8,55.4, 36.2, 19.3 b-8, 56.2, 35.3 c=,56.0, 36.0, 24.2, 82 CH CHs IL. Cl IIH CH3 4. To answer the following questions, consider the data and 'H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at mva-113, the IR spectrum has characteristic absorptions at 2270 and 1735 cm1, and the C NMR spectrum has five signals 2H 3 HExplanation / Answer
ANSWER
NUMBER OF SIGNALS IN THE C13 NMR IS EQUAL TO THE NUMBER OF DIFFERENTLY DEDHIELDED CARBONS
1 B HERE WE HAVE ALL 3 CH3 SIMILARLY DESHIELDED
2 C HERE ALL THE CARBONS ARE DIFFERENT ENVIRONMENT OF BONDING
3 A HERE AGAIN 2 CH3 SHOW SIMILARITY IN BONDING
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