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

using model chemistry: B1B95/6-31G

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 B1B95/6-31G
 hartrees
Energy at 0K-168.449541
Energy at 298.15K 
HF Energy-168.449541
Nuclear repulsion energy59.572051
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 B1B95/6-31G
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 3584 3418 237.31 30.38 0.21 0.35
2 Σ 2312 2205 218.42 27.84 0.16 0.28
3 Σ 1213 1157 99.14 13.77 0.31 0.48
4 Π 519 495 3.51 0.45 0.75 0.86
4 Π 519 495 3.51 0.45 0.75 0.86
5 Π 403 385 109.36 4.03 0.75 0.86
5 Π 403 385 109.36 4.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4476.7 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 4269.5 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 B1B95/6-31G
B
0.37184

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.204
N2 0.000 0.000 -0.029
C3 0.000 0.000 -1.195
H4 0.000 0.000 -2.254

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.23322.39903.4577
N21.23321.16582.2246
C32.39901.16581.0588
H43.45772.22461.0588

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 B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.382      
2 N 0.072      
3 C 0.009      
4 H 0.302      


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 -3.625 3.625
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.570 0.000 0.000
y 0.000 -16.570 0.000
z 0.000 0.000 -14.304
Traceless
 xyz
x -1.133 0.000 0.000
y 0.000 -1.133 0.000
z 0.000 0.000 2.266
Polar
3z2-r24.533
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 1.077 0.000 0.000
y 0.000 1.077 0.000
z 0.000 0.000 5.596


<r2> (average value of r2) Å2
<r2> 35.127
(<r2>)1/2 5.927

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-168.449543
Energy at 298.15K-168.450161
HF Energy-168.449543
Nuclear repulsion energy59.571981
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 B1B95/6-31G
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' 3586 3420 237.01      
2 A' 2313 2206 218.22      
3 A' 1213 1157 99.28      
4 A' 519 495 3.49      
5 A' 404 385 109.37      
6 A" 451 430 50.59      

Unscaled Zero Point Vibrational Energy (zpe) 4242.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 4046.5 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 B1B95/6-31G
B
0.37184

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.004 -1.204 0.000
N2 0.000 0.029 0.000
C3 0.004 1.195 0.000
H4 0.008 2.254 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.23312.39903.4578
N21.23311.16582.2246
C32.39901.16581.0588
H43.45782.22461.0588

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 179.991 N2 C3 H4 179.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.382      
2 N 0.072      
3 C 0.009      
4 H 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.013 3.625 0.000 3.625
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.570 0.010 0.000
y 0.010 -14.303 0.000
z 0.000 0.000 -16.570
Traceless
 xyz
x -1.133 0.010 0.000
y 0.010 2.267 0.000
z 0.000 0.000 -1.133
Polar
3z2-r2-2.267
x2-y2-2.267
xy0.010
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.077 0.015 0.000
y 0.015 5.597 0.000
z 0.000 0.000 1.077


<r2> (average value of r2) Å2
<r2> 35.127
(<r2>)1/2 5.927