Question

why is no PMR spectrum obtained from CCL4​

Answer 1

Top answer · 3 votes

The TRANSITION dipole moment must be different from zero. The are symmetric vibrations which are Raman active (the transition polarizability is not zero) ...  More

Answer 2

Answer:

• Due to the absence of protons and hence the absence of 1H NMR absorption, carbon tetrachloride (CCl4) is a suitable solvent.
• Carbon tetrachloride does not, however, dissolve many organic molecules.
• The most practical organic solvents frequently contain hydrogens, which exhibit disruptive absorptions.
• Many of the peaks that seemed to be single peaks in the low resolution spectrum are broken into clusters of peaks in the high resolution spectrum.
• You may determine how many various settings the hydrogen atoms are in by counting the number of peaks.
• You can determine the ratio of hydrogen atom counts in each of these environments by comparing the areas under the peaks.
• You can learn a lot about the type of environment the hydrogen atoms are in from the chemical alterations.

#SPJ2