Which of the following spectroscopic techniques will be useful to distinguish between M-SCN and M-NCS binding modes?a)NMRb)IRc)EPRd)MassCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

IR Spectroscopy for distinguishing between M-SCN and M-NCS binding modes:
IR spectroscopy is a useful technique to distinguish between M-SCN and M-NCS binding modes. This is because both M-SCN and M-NCS have characteristic peaks in the IR spectrum that can be used to differentiate between them.

Explanation:
When M-SCN or M-NCS binds to a metal ion, it forms a complex that has characteristic vibrations in the IR spectrum. In particular, the C=N stretch in M-SCN and M-NCS complexes occurs at different frequencies, which allows them to be distinguished from each other.

How IR Spectroscopy works:
IR spectroscopy works by passing infrared radiation through a sample and measuring the absorption of the radiation. Different functional groups in a molecule absorb at different frequencies, which allows IR spectroscopy to be used to identify specific functional groups in a molecule.

Why NMR, EPR, and Mass Spectroscopy are not useful for distinguishing between M-SCN and M-NCS binding modes:
NMR, EPR, and mass spectroscopy are not useful for distinguishing between M-SCN and M-NCS binding modes because they do not provide information about the specific functional groups present in a sample. NMR spectroscopy provides information about the chemical environment of nuclei in a molecule, EPR spectroscopy provides information about unpaired electrons in a molecule, and mass spectroscopy provides information about the mass-to-charge ratio of ions in a sample. While these techniques can be used to identify specific molecules, they do not provide the specific information needed to distinguish between M-SCN and M-NCS binding modes.

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