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I am trying to interpret some data which have been calculated for IR/Raman but I don't know how to interpret them exactly. The schema says

mode \nu

1 b_u 82

1 a_g 216

2 b_g 239

I presume that the u/g are gerade/ungerade from the bonding/antibonding wave functions but how to assign these informations into stretch, bend etc. Is there a table where one can look these values up?

How to proceed any help appreciated. Thanks in advance.

Best regards,

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# IR/Raman spectra and symmetry

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