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

using model chemistry: TPSSh/6-31+G**

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 TPSSh/6-31+G**
 hartrees
Energy at 0K-168.587375
Energy at 298.15K 
HF Energy-168.587375
Nuclear repulsion energy60.065082
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 TPSSh/6-31+G**
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 3527 3395 264.11 34.94 0.22 0.36
2 Σ 2325 2238 386.59 37.17 0.10 0.18
3 Σ 1290 1241 118.71 22.59 0.24 0.39
4 Π 558 538 1.83 0.70 0.75 0.86
4 Π 558 538 1.83 0.70 0.75 0.86
5 Π 144 138 109.19 10.62 0.75 0.86
5 Π 144 138 109.19 10.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4272.8 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 4112.6 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 TPSSh/6-31+G**
B
0.37798

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.191
N2 0.000 0.000 -0.021
C3 0.000 0.000 -1.188
H4 0.000 0.000 -2.251

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.21182.37833.4415
N21.21181.16652.2297
C32.37831.16651.0631
H43.44152.22971.0631

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
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.181      
2 N -0.003      
3 C -0.114      
4 H 0.297      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.261 3.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.765 0.000 0.000
y 0.000 1.765 0.000
z 0.000 0.000 6.381


<r2> (average value of r2) Å2
<r2> 34.818
(<r2>)1/2 5.901

Conformer 2 (CS)

Jump to S1C1
Energy calculated at TPSSh/6-31+G**
 hartrees
Energy at 0K-168.587376
Energy at 298.15K 
HF Energy-168.587376
Nuclear repulsion energy60.059282
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 TPSSh/6-31+G**
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' 3529 3397 263.58      
2 A' 2325 2238 385.91      
3 A' 1289 1241 118.94      
4 A' 559 538 1.88      
5 A' 151 146 109.08      
6 A" 557 536 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 4205.2 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 4047.5 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 TPSSh/6-31+G**
B
0.37798

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.002 -1.191 0.000
N2 0.000 0.021 0.000
C3 0.002 1.188 0.000
H4 0.003 2.251 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.21202.37863.4417
N21.21201.16652.2297
C32.37861.16651.0632
H43.44172.22971.0632

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 179.984 N2 C3 H4 179.911
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.181      
2 N -0.003      
3 C -0.114      
4 H 0.297      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.004 3.263 0.000 3.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.765 0.010 0.000
y 0.010 6.381 0.000
z 0.000 0.000 1.765


<r2> (average value of r2) Å2
<r2> 34.822
(<r2>)1/2 5.901