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: wB97X-D/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 wB97X-D/6-31+G**
 hartrees
Energy at 0K-168.518480
Energy at 298.15K 
HF Energy-168.518480
Nuclear repulsion energy60.398077
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 wB97X-D/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 3529 3361 281.91 27.20 0.21 0.34
2 Σ 2368 2255 423.11 47.64 0.13 0.22
3 Σ 1319 1256 152.86 20.50 0.24 0.39
4 Π 573 545 0.09 1.24 0.75 0.86
4 Π 573 545 0.09 1.24 0.75 0.86
5 Π 356 339 107.15 9.26 0.75 0.86
5 Π 356 339 107.15 9.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4536.5 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 4320.1 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 wB97X-D/6-31+G**
B
0.38228

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.184
N2 0.000 0.000 -0.022
C3 0.000 0.000 -1.180
H4 0.000 0.000 -2.244

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20572.36403.4278
N21.20571.15832.2221
C32.36401.15831.0638
H43.42782.22211.0638

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 wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.227      
2 N 0.029      
3 C -0.113      
4 H 0.311      


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 -3.537 3.537
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.856 0.000 0.000
y 0.000 -16.856 0.000
z 0.000 0.000 -13.974
Traceless
 xyz
x -1.441 0.000 0.000
y 0.000 -1.441 0.000
z 0.000 0.000 2.882
Polar
3z2-r25.764
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 1.727 0.000 0.000
y 0.000 1.727 0.000
z 0.000 0.000 6.286


<r2> (average value of r2) Å2
<r2> 34.535
(<r2>)1/2 5.877

Conformer 2 (CS)

Jump to S1C1
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-168.518043
Energy at 298.15K 
HF Energy-168.518043
Nuclear repulsion energy60.524900
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 wB97X-D/6-31+G**
Rotational Constants (cm-1) from geometry optimized at wB97X-D/6-31+G**
B
0.38228

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.057 0.547 0.000
N2 0.000 -0.044 0.000
C3 1.092 -0.482 0.000
H4 1.905 -1.177 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.21152.38313.4276
N21.21151.17662.2163
C32.38311.17661.0696
H43.42762.21631.0696

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 172.601 N2 C3 H4 161.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.217      
2 N 0.082      
3 C -0.153      
4 H 0.288      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.042 -3.302 0.000 3.462
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.910 0.440 0.000
y 0.440 -14.058 0.000
z 0.000 0.000 -16.842
Traceless
 xyz
x -1.460 0.440 0.000
y 0.440 2.818 0.000
z 0.000 0.000 -1.358
Polar
3z2-r2-2.715
x2-y2-2.852
xy0.440
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.727 0.000 0.000
y 0.000 1.727 0.000
z 0.000 0.000 6.286


<r2> (average value of r2) Å2
<r2> 34.404
(<r2>)1/2 5.865