A New Relation between the N—H Stretching Frequencies of Primary Amides

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

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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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