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All results from a given calculation for HCNO (fulminic acid)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
1 2 no CS 1A'

Conformer 1 (C*V)

Jump to S1C2
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-168.549885
Energy at 298.15K 
HF Energy-168.549885
Nuclear repulsion energy60.694293
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3513 3382 233.91      
2 Σ 2360 2272 372.16      
3 Σ 1329 1280 118.78      
4 Xpi 580 558 0.43      
4 Xpi 580 558 0.43      
5 Xpi 160 154 97.50      
5 Xpi 160 154 97.50      

Unscaled Zero Point Vibrational Energy (zpe) 4340.6 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 4178.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-311G*
B
0.38591

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C∞v

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