Assign the peaks in the ¹H NMR spectrum for the molecule shown.
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Verified step by step guidance

1. Identify the different types of hydrogen environments in the molecule. Look for unique hydrogen atoms that are in different chemical environments due to their bonding and the presence of nearby electronegative atoms or π systems.
2. Determine the chemical shift range for each type of hydrogen. Use known chemical shift ranges for different types of hydrogens, such as alkyl, alkenyl, aromatic, or those near electronegative atoms.
3. Consider the splitting pattern for each peak. The splitting pattern is determined by the number of neighboring hydrogens (n+1 rule), where n is the number of adjacent hydrogens.
4. Estimate the integration of each peak. The integration corresponds to the relative number of hydrogens contributing to each signal, which helps in assigning the peaks to specific hydrogen environments.
5. Match each peak in the ¹H NMR spectrum with the identified hydrogen environments based on chemical shift, splitting pattern, and integration. Assign the peaks accordingly to complete the analysis.

Key Concepts

¹H NMR Spectroscopy

¹H NMR spectroscopy is a technique used to determine the structure of organic compounds by analyzing the magnetic environment of hydrogen atoms. It provides information about the number of hydrogen atoms, their chemical environment, and how they are connected within a molecule. Peaks in the spectrum correspond to different hydrogen environments, helping to deduce molecular structure.

Chemical Shift

Chemical shift in ¹H NMR refers to the position of the NMR signal relative to a standard reference, typically tetramethylsilane (TMS). It indicates the electronic environment surrounding a hydrogen atom, influenced by nearby electronegative atoms or functional groups. Chemical shifts help identify the type of hydrogen present, such as aromatic, aliphatic, or hydroxyl hydrogens.

Spin-Spin Coupling

Spin-spin coupling, or J-coupling, occurs when hydrogen atoms influence each other's magnetic fields, causing splitting of NMR signals into multiplets. The pattern and number of peaks in a multiplet provide information about the number of neighboring hydrogen atoms. Understanding coupling helps in determining the connectivity and arrangement of atoms within a molecule.