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Compare vibrational frequencies in CCCBDB for AlH4- (Aluminum tetrahydride anion)

LSDA/STO-3G

18 11 26 13 55
Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency Scaled
Frequency
Harm.
diff
Fund.
diff
Symmetry Harmonic
Frequency
Fundamental
Frequency
Comment
1 A1 2295 2055           
2 E 1034 926   176 E   750  
3 T2 2293 2053   425 T2   1628  
4 T2 1022 915   145 T2   771  
The calculated vibrational frequencies were scaled by 0.8955

See section Calculated; Vibrations; Scale Factors; Set scaling factors to change the scale factors used here.
See section Calculated; Vibrations; Scale Factors; Calculate a scale factor to determine the least squares best scaling factor.
See section Calculated; Vibrations; Scale Factors; Scale factor uncertainty for information on where the above scaling factor is from.