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Grade 12th passInorganic Chemistry

Which of the following has highest stretching
vibrational frequency for C–O bond
(1) [Fe(CO)4]–2 (2) [Co(CO)4]- (3) [Ni(CO)4] (4) [Cu(CO)4]+

Profile image of Rishi Purwar
7 Years agoGrade 12th pass
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1 Answer

Profile image of Avni Chauhan
7 Years ago
The electrons from the metal are shifted in the antibonding orbitals of CO. Thus, reducing the stretching frequency. Higher is the negative charge on the metal atom, lower the frequency.
therefore, (D) is the correct answer

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