Question
Download Solution PDFThe reasonance Raman stretching frequency (V0-0 in cm-1) of O2 is 1580.
The V0-0 for O2 in bound oxy-hemoglobin is close to -Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Hemoglobin is a protein in red blood cells that transports oxygen.
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The resonance Raman stretching frequency (\(\nu_{O-O}\)) is a method used to study vibrational modes in molecules like O2.
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Free O2 has a resonance Raman stretching frequency of approximately 1580 cm-1.
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O2 can bind in different forms: oxide, superoxide, and peroxide, each with characteristic Raman frequencies:
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Oxide (free O2) - Around 1580 cm-1
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Superoxide (O2-) - Around 1100-1150 cm-1
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Peroxide (O22-) - Around 800-850 cm-1
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Explanation:
In oxy-hemoglobin, O2 is typically in a superoxide form due to the interaction with the iron center of the hemoglobin. Thus the \(\nu_{O-O}\) is found to be in the range of 1100-1150 cm-1
Conclusion:
For O2 bound in oxy-hemoglobin, the resonance Raman stretching frequency \(\nu_{O-O}\) is close to 1100 cm-1.
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