return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HSEh1PBE/6-31+G**

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 HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-168.410893
Energy at 298.15K 
HF Energy-168.410893
Nuclear repulsion energy60.444028
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 HSEh1PBE/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 3541 3381 284.67 29.44 0.21 0.35
2 Σ 2380 2273 417.21 41.31 0.11 0.20
3 Σ 1335 1274 135.11 22.16 0.24 0.38
4 Π 578 552 0.24 1.14 0.75 0.86
4 Π 578 552 0.24 1.14 0.75 0.86
5 Π 305 291 107.69 9.56 0.75 0.86
5 Π 305 291 107.69 9.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4510.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 4306.6 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 HSEh1PBE/6-31+G**
B
0.38281

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.183
N2 0.000 0.000 -0.020
C3 0.000 0.000 -1.180
H4 0.000 0.000 -2.244

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20212.36243.4262
N21.20211.16042.2241
C32.36241.16041.0638
H43.42622.22411.0638

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 HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.209      
2 N 0.010      
3 C -0.100      
4 H 0.300      


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 -3.352 3.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.910 0.000 0.000
y 0.000 -16.910 0.000
z 0.000 0.000 -14.010
Traceless
 xyz
x -1.450 0.000 0.000
y 0.000 -1.450 0.000
z 0.000 0.000 2.899
Polar
3z2-r25.799
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.742 0.000 0.000
y 0.000 1.742 0.000
z 0.000 0.000 6.273


<r2> (average value of r2) Å2
<r2> 34.534
(<r2>)1/2 5.877

Conformer 2 (CS)

Jump to S1C1
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-168.410894
Energy at 298.15K-168.411534
HF Energy-168.410894
Nuclear repulsion energy60.447166
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 HSEh1PBE/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' 3542 3381 284.52      
2 A' 2381 2273 417.70      
3 A' 1336 1275 134.80      
4 A' 578 552 0.24      
5 A' 305 291 107.76      
6 A" 554 529 15.40      

Unscaled Zero Point Vibrational Energy (zpe) 4347.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 4150.5 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 HSEh1PBE/6-31+G**
B
0.38284

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.018 -1.182 0.000
N2 0.000 0.019 0.000
C3 0.018 1.180 0.000
H4 0.032 2.243 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20192.36233.4261
N21.20191.16042.2243
C32.36231.16041.0638
H43.42612.22431.0638

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 179.941 N2 C3 H4 179.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.209      
2 N 0.010      
3 C -0.100      
4 H 0.300      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.047 3.350 0.000 3.351
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.909 0.036 0.000
y 0.036 -14.011 0.000
z 0.000 0.000 -16.910
Traceless
 xyz
x -1.449 0.036 0.000
y 0.036 2.899 0.000
z 0.000 0.000 -1.450
Polar
3z2-r2-2.899
x2-y2-2.898
xy0.036
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.743 0.071 0.000
y 0.071 6.273 0.000
z 0.000 0.000 1.742


<r2> (average value of r2) Å2
<r2> 34.532
(<r2>)1/2 5.876