Consider HCN, which has threefeatures in its IR spectrum: 946, 2380, and-13386 cm¹. (a) Sketch the motions of eachnormal mode and denote any degeneracies. (b)Assign each feature in the IR spectrum to anormal mode of the molecule. (c) Determinethe zero-point energy of HCN.

1. **Low frequency mode (946 cm⁻¹)**: This is likely to be the bending or deformation mode where the…

Answered: Consider HCN, which has three features…

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter15: Introduction To Electronic Spectroscopy And Structure

Section: Chapter Questions

Problem 15.56E

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Consider HCN, which has three features in its IR spectrum: 946, 2380, and -1 3386 cm¹. (a) Sketch the motions of each normal mode and denote any degeneracies. (b) Assign each feature in the IR spectrum to a normal mode of the molecule. (c) Determine the zero-point energy of HCN.