(•••) Assign the peaks in the ¹H NMR spectrum for the molecule shown.

Verified step by step guidance

1. Identify the molecular structure of the given compound.
2. Determine the number of unique hydrogen environments in the molecule.
3. Predict the chemical shift range for each type of hydrogen based on its environment.
4. Consider the splitting pattern for each peak, which is determined by the number of neighboring hydrogens (n+1 rule).
5. Assign each peak in the ¹H NMR spectrum to the corresponding hydrogen environment in the molecule.

Key Concepts

Nuclear Magnetic Resonance (NMR) Spectroscopy

NMR spectroscopy is a powerful analytical technique used to determine the structure of organic compounds. It exploits the magnetic properties of certain nuclei, primarily hydrogen (¹H), to provide information about the number of hydrogen atoms in different environments within a molecule. The resulting spectrum displays peaks that correspond to these environments, allowing chemists to infer structural details.

Chemical Shift

Chemical shift refers to the position of a peak in an NMR spectrum, measured in parts per million (ppm). It indicates the electronic environment surrounding the hydrogen atoms, influenced by factors such as electronegativity and hybridization. Different functional groups and molecular structures lead to distinct chemical shifts, which are crucial for identifying the types of hydrogen present in the molecule.

Integration and Multiplicity

Integration in NMR refers to the area under a peak, which correlates to the number of hydrogen atoms contributing to that signal. Multiplicity describes the splitting pattern of the peaks, which arises from the interaction of neighboring hydrogen atoms (n+1 rule). Understanding integration and multiplicity helps in determining the number of hydrogen atoms in different environments and their connectivity within the molecule.