A tired student working late in lab one evening forgot to label vials differentiating between Cis...

A tired student working late in lab one evening forgot to label vials differentiating between Cis and trans isomers of FeCl2(CO)4. How can the student use infrared and Raman spectroscopy to determine which vial contains which compound? Show a detailed CO vibrational mode analysis for both compounds and explain your answer using a few sentences

Expert Solution

Both the componds can be easily distinguished by using IR spectroscopy technique. In the case of trans isomer the number of bands will appear less in comparion with the cis isomer of the compound. It is becase in the case of trans isomer dipole moment will cancel out of opposite sides while in case of the cis it will not happen so it will give more number of bands. And in the case of raman spectra, trans will give more number of signals in comparison with cis because of the greater polarizability. CO stretching frequency will give symmetrical bands in the ir spectrum of trans isomer in comparison with the cis isomer.

queen_honey_blossom answered 2 years ago

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