Skip to main content

A Vibrational Rotational Strength of Extraordinary Intensity. Azidomethemoglobin A

  • Chapter
Optical Activity and Chiral Discrimination

Part of the book series: NATO Advanced Study Institutes Series ((ASIC,volume 48))

Abstract

The asymmetric stretching vibration of the N3 - group in azidomethemoglobin A (azidometHb A) exhibits a vibrational circular dichroism (VCD) band (Fig. 1) of extraordinary and unprecedented intensity. Its rotational strength is three orders of magnitude greater than any heretofore noted. Integration of the VCD band gives a vibrational rotational strength (per tetramer) of 3 × 10 -40 (esu cm)2, a value typical for the electronic rotational strengths associated with the n → π* transition in saturated ketones.

his work has been supported in part by NSF Grant No. CHE 7706752 and NIH Grant No. HL 16833.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 129.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References and Notes

  1. I. Chabay and G. Holzwarth, Appl. Opt., 14, 454 (1975).

    Article  CAS  Google Scholar 

  2. We have replaced the homemade germanium modulator described in Ref. [1] with a commercial 57 kHz CaF2 photoelastic modulator (Hinds International). The signal processing electronics have also been modified and are now similar to that described by Nafie, et al. [3]. The PAR model HR-8 lock-in amplifier has been replaced by two lock-ins: an ORTEC model 9503 followed by a PAR model 186A. Unlike the electronics described in Ref. [3], we do not have a normalization circuit, but rather divide the output of the PAR 186A by the output of the PAR model 220 lock-in [1] with an ORTEC model 5047 ratiometer. These modifications have resulted in a considerable flattening of the baseline and a significant improvement in signal-to-noise ratio over earlier spectra. See for example, H. Sugeta, C. Marcott, T. R. Faulkner, J. Overend, and A. Moscowitz, Chem. Phys. Lett., 40, 397 (1976).

    Article  CAS  Google Scholar 

  3. L. A. Nafie, T. A. rliderling, and P. J. Stephens, J. Am. Chem. Soc., 98, 2715 (1976).

    Article  CAS  Google Scholar 

  4. O. W. van Assendelf t and W. G. Zijlstra, Anal. Biochem., 69, 43 (1975).

    Article  Google Scholar 

  5. D. L. Drabkin and J. H. Austin, J. Biol. Chem., 112, 51 (1935).

    CAS  Google Scholar 

  6. S. McCoy and W. S. Caughy, Biochemistry, 9, 2387 (1970).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1979 Springer Science+Business Media Dordrecht

About this chapter

Cite this chapter

Marcott, C., Havel, H.A., Hedlund, B., Overend, J., Moscowitz, A. (1979). A Vibrational Rotational Strength of Extraordinary Intensity. Azidomethemoglobin A. In: Mason, S.F. (eds) Optical Activity and Chiral Discrimination. NATO Advanced Study Institutes Series, vol 48. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-7644-4_11

Download citation

  • DOI: https://doi.org/10.1007/978-94-015-7644-4_11

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-8355-5

  • Online ISBN: 978-94-015-7644-4

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics