Compounds
Compounds
Compound
The
Draw the structure of compounds
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→ The mass spectrum has two peaks to the far right of the spectrum of similar height at 122 m/z and 124 m/z. This is due to the halogen having two isotopes with the same relative abundance.
→ Isotope
→ The two isomers of
→ Only secondary alcohols will oxidise to produce a ketone. Hence compound
→ Therefore, compound
→ When 3-methylbutanoic acid is reacted with alcohol
→ When 3-methylbutanoic acid is reacted with alcohol
→ There are 6 unique hydrogen environments present in compound
→ Compound
→ This can be confirmed by the integration (ratio of hydrogens in each environment) and peak splitting columns (number of splits = number of adjacent hydrogens + 1)
→ The shift at 0.96 is due to environment 1 which has six hydrogen atoms and has one neighbouring hydrogen atom (produces a doublet).
→ The shift at 2.1 is due to environment 2 which has one hydrogen 1 atom and has 8 neighbouring hydrogen atoms a (produces a mutliplet of 9)(.
→ The shift at 4.0 is due to environment 4. This
→ Other answers could have included a further explanation regarding the integration and peak splitting of all the hydrogen environments and their relative chemical shifts.
→ The mass spectrum has two peaks to the far right of the spectrum of similar height at 122 m/z and 124 m/z. This is due to the halogen having two isotopes with the same relative abundance.
→ Isotope
→ The two isomers of
→ Only secondary alcohols will oxidise to produce a ketone. Hence compound
→ Therefore, compound
→ When 3-methylbutanoic acid is reacted with alcohol
→ When 3-methylbutanoic acid is reacted with alcohol
→ There are 6 unique hydrogen environments present in compound
→ Compound
→ This can be confirmed by the integration (ratio of hydrogens in each environment) and peak splitting columns (number of splits = number of adjacent hydrogens + 1)
→ The shift at 0.96 is due to environment 1 which has six hydrogen atoms and has one neighbouring hydrogen atom (produces a doublet).
→ The shift at 2.1 is due to environment 2 which has one hydrogen 1 atom and has 8 neighbouring hydrogen atoms a (produces a mutliplet of 9)(.
→ The shift at 4.0 is due to environment 4. This
→ Other answers could have included a further explanation regarding the integration and peak splitting of all the hydrogen environments and their relative chemical shifts.