Abstract
BELLAMY et al.1, from the data obtained for a number of aromatic primary amines in dilute solutions, have shown that the N—H asymmetric and symmetric stretching frequencies are related by the expression νs = 345.5 + 0.875 νas. The standard deviation of the calculated symmetric stretching frequencies from those of the recorded values is about 5 cm−1. These workers also mention that the same relation would not be obeyed in situations where the two N—H links are non-equivalent.
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References
Bellamy, L. J., and Williams, R. L., Spectrochimica Acta, 9, 341 (1957).
Puranik, P. G., and Venkata Ramiah, K., J. Mol. Spectroscopy, 3, 486 (1959).
Puranik, P. G., and Venkata Ramiah, K., Proc. Ind. Acad. Sci. (in the press).
Davies, M., and Hallam, H. E., Trans. Farad. Soc., 47, 1177 (1951).
Davies, M., and Evans, J. C., J. Chem. Phys., 20, 342 (1952).
Cleverley, B., Chemical Applications of Spectroscopy, 514 (Interscience Pub., 1956).
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PURANIK, P., VENKATA RAMIAH, K. A New Relation between the N—H Stretching Frequencies of Primary Amides. Nature 191, 796–797 (1961). https://doi.org/10.1038/191796a0
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DOI: https://doi.org/10.1038/191796a0
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