Account for the peaks at m/z 87, 111, and 126 in the mass spectrum of 2,6-dimethylheptan-4-ol.
<IMAGE>

검증된 단계별 안내

Identify the molecular structure of 2,6-dimethylheptan-4-ol. It is a seven-carbon chain with methyl groups attached to carbons 2 and 6, and a hydroxyl (-OH) group attached to carbon 4.

Understand that the mass spectrum provides peaks corresponding to fragments of the molecule. The m/z values represent the mass-to-charge ratio of these fragments, typically resulting from cleavage of bonds in the molecule.

For the peak at m/z 87: Consider the cleavage of the molecule at the C4-C5 bond. This would result in a fragment containing the first four carbons (C1-C4) along with the hydroxyl group. Calculate the mass of this fragment by summing the atomic masses of its components.

For the peak at m/z 111: Consider the cleavage of the molecule at the C3-C4 bond. This would result in a fragment containing the first three carbons (C1-C3) and the hydroxyl group, along with the methyl group at C2. Calculate the mass of this fragment by summing the atomic masses of its components.

For the peak at m/z 126: This peak likely corresponds to the molecular ion (M+) of the compound, which represents the entire molecule with a single positive charge. Calculate the molecular mass of 2,6-dimethylheptan-4-ol by summing the atomic masses of all its atoms.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Mass Spectrometry

Mass spectrometry is an analytical technique used to measure the mass-to-charge ratio of ions. It involves ionizing chemical species and sorting the ions based on their mass. The resulting mass spectrum displays peaks corresponding to different ions, where the m/z (mass-to-charge) values indicate the mass of the ions detected. Understanding this technique is crucial for interpreting the peaks in the spectrum.

Fragmentation Patterns

Fragmentation patterns refer to the specific ways in which a molecule breaks apart into smaller ions during mass spectrometry. These patterns are influenced by the structure of the molecule and can provide insights into its composition. For 2,6-dimethylheptan-4-ol, the peaks at m/z 87, 111, and 126 likely correspond to specific fragments resulting from the cleavage of the molecular structure, which can help identify the compound.

Isomerism in Organic Compounds

Isomerism is the phenomenon where compounds with the same molecular formula have different structural arrangements or spatial orientations. In the case of 2,6-dimethylheptan-4-ol, understanding its isomers is essential for interpreting the mass spectrum, as different isomers can produce distinct fragmentation patterns and thus different m/z values. This concept aids in predicting and rationalizing the observed peaks in the mass spectrum.

Account for the peaks at m/z 87, 111, and 126 in the mass spectrum of 2,6-dimethylheptan-4-ol.<IMAGE>