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: M06-2X/6-31G*

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 M06-2X/6-31G*
 hartrees
Energy at 0K-168.498117
Energy at 298.15K 
HF Energy-168.498117
Nuclear repulsion energy60.495445
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 M06-2X/6-31G*
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 3561 3373 270.24 25.30 0.24 0.39
2 Σ 2413 2285 339.08 31.28 0.20 0.33
3 Σ 1340 1269 149.75 15.56 0.28 0.44
4 Π 594 563 0.11 1.14 0.75 0.86
4 Π 594 563 0.11 1.14 0.75 0.86
5 Π 406 384 88.11 1.54 0.75 0.86
5 Π 406 384 88.11 1.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4657.0 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 4410.2 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 M06-2X/6-31G*
B
0.38352

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.182
N2 0.000 0.000 -0.021
C3 0.000 0.000 -1.178
H4 0.000 0.000 -2.242

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20282.35993.4242
N21.20281.15712.2214
C32.35991.15711.0643
H43.42422.22141.0643

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 M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.491      
2 N 0.222      
3 C -0.025      
4 H 0.294      


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 -3.410 3.410
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.501 0.000 0.000
y 0.000 -16.501 0.000
z 0.000 0.000 -13.501
Traceless
 xyz
x -1.500 0.000 0.000
y 0.000 -1.500 0.000
z 0.000 0.000 3.000
Polar
3z2-r26.000
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 1.325 0.000 0.000
y 0.000 1.325 0.000
z 0.000 0.000 5.430


<r2> (average value of r2) Å2
<r2> 34.214
(<r2>)1/2 5.849

Conformer 2 (CS)

Jump to S1C1
Energy calculated at M06-2X/6-31G*
 hartrees
Energy at 0K-168.498120
Energy at 298.15K-168.498909
HF Energy-168.498120
Nuclear repulsion energy60.495000
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 M06-2X/6-31G*
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' 3554 3366 273.43      
2 A' 2414 2286 340.47      
3 A' 1343 1271 147.02      
4 A' 600 568 0.05      
5 A' 412 390 87.95      
6 A" 599 568 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 4460.6 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 4224.2 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 M06-2X/6-31G*
B
0.38352

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.007 -1.182 0.000
N2 0.000 0.021 0.000
C3 0.008 1.178 0.000
H4 0.010 2.242 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20292.35993.4241
N21.20291.15702.2211
C32.35991.15701.0641
H43.42412.22111.0641

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 179.953 N2 C3 H4 179.741
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.491      
2 N 0.222      
3 C -0.025      
4 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.015 3.410 0.000 3.410
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.501 0.005 0.000
y 0.005 -13.502 0.000
z 0.000 0.000 -16.501
Traceless
 xyz
x -1.499 0.005 0.000
y 0.005 2.998 0.000
z 0.000 0.000 -1.499
Polar
3z2-r2-2.998
x2-y2-2.998
xy0.005
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.323 0.026 0.000
y 0.026 5.415 0.000
z 0.000 0.000 1.323


<r2> (average value of r2) Å2
<r2> 34.214
(<r2>)1/2 5.849