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

using model chemistry: MP4/aug-cc-pVTZ

19 10 17 12 22

States and conformations

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

Conformer 1 (C*V)

Jump to S1C2
Energy calculated at MP4/aug-cc-pVTZ
 hartrees
Energy at 0K-168.349870
Energy at 298.15K 
HF Energy-167.692394
Nuclear repulsion energy59.843508
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 MP4/aug-cc-pVTZ
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 3478 3384        
2 Σ 2216 2157        
3 Σ 1258 1224        
4 Π 536 522        
4 Π 536 521        
5 Π 333i 324i        
5 Π 334i 325i        

Unscaled Zero Point Vibrational Energy (zpe) 3678.2 cm-1
Scaled (by 0.9732) Zero Point Vibrational Energy (zpe) 3579.6 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 MP4/aug-cc-pVTZ
B
0.37496

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.193
N2 0.000 0.000 -0.016
C3 0.000 0.000 -1.196
H4 0.000 0.000 -2.258

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20972.38903.4509
N21.20971.17932.2412
C32.38901.17931.0619
H43.45092.24121.0619

picture of fulminic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C3 180.000 N2 C3 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP4/aug-cc-pVTZ
 hartrees
Energy at 0K-168.350932
Energy at 298.15K-168.351719
HF Energy-167.685952
Nuclear repulsion energy59.738973
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 MP4/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3415 3324        
2 A' 2187 2128        
3 A' 1249 1216        
4 A' 546 531        
5 A' 479 466        
6 A" 543 528        

Unscaled Zero Point Vibrational Energy (zpe) 4209.2 cm-1
Scaled (by 0.9732) Zero Point Vibrational Energy (zpe) 4096.4 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 MP4/aug-cc-pVTZ
ABC
71.03804 0.37777 0.37577

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.064 -0.531 0.000
N2 0.000 0.039 0.000
C3 1.120 0.449 0.000
H4 1.793 1.277 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20692.39323.3802
N21.20691.19232.1782
C32.39321.19231.0666
H43.38022.17821.0666

picture of fulminic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C3 171.924 N2 C3 H4 149.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability