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

using model chemistry: B1B95/TZVP

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 B1B95/TZVP
 hartrees
Energy at 0K-168.576823
Energy at 298.15K 
HF Energy-168.576823
Nuclear repulsion energy60.914247
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/TZVP
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 3536 3383 277.31 25.42 0.19 0.32
2 Σ 2375 2272 425.92 39.70 0.11 0.20
3 Σ 1330 1272 145.78 19.75 0.27 0.42
4 Π 569 544 1.25 0.63 0.75 0.86
4 Π 569 544 1.25 0.63 0.75 0.86
5 Π 288 276 92.20 8.16 0.75 0.86
5 Π 288 276 92.20 8.16 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4476.8 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 4283.8 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/TZVP
B
0.38878

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.173
N2 0.000 0.000 -0.018
C3 0.000 0.000 -1.171
H4 0.000 0.000 -2.230

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19122.34383.4027
N21.19121.15272.2116
C32.34381.15271.0589
H43.40272.21161.0589

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/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.271      
2 N 0.257      
3 C -0.188      
4 H 0.201      


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 -3.248 3.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.689 0.000 0.000
y 0.000 -16.689 0.000
z 0.000 0.000 -14.203
Traceless
 xyz
x -1.243 0.000 0.000
y 0.000 -1.243 0.000
z 0.000 0.000 2.486
Polar
3z2-r24.973
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 1.586 0.000 0.000
y 0.000 1.586 0.000
z 0.000 0.000 6.048


<r2> (average value of r2) Å2
<r2> 34.113
(<r2>)1/2 5.841

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B1B95/TZVP
 hartrees
Energy at 0K-168.576824
Energy at 298.15K-168.577449
HF Energy-168.576824
Nuclear repulsion energy60.912796
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/TZVP
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' 3538 3385 277.00      
2 A' 2376 2273 425.90      
3 A' 1330 1273 145.75      
4 A' 569 544 1.22      
5 A' 287 275 92.24      
6 A" 564 540 6.38      

Unscaled Zero Point Vibrational Energy (zpe) 4331.7 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 4145.0 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/TZVP
B
0.38876

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.007 -1.173 0.000
N2 0.000 0.018 0.000
C3 0.007 1.171 0.000
H4 0.012 2.230 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19122.34393.4028
N21.19121.15272.2116
C32.34391.15271.0589
H43.40282.21161.0589

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 179.976 N2 C3 H4 179.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.271      
2 N 0.257      
3 C -0.188      
4 H 0.201      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.017 3.248 0.000 3.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.689 0.011 0.000
y 0.011 -14.202 0.000
z 0.000 0.000 -16.689
Traceless
 xyz
x -1.243 0.011 0.000
y 0.011 2.487 0.000
z 0.000 0.000 -1.244
Polar
3z2-r2-2.487
x2-y2-2.487
xy0.011
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.586 0.027 0.000
y 0.027 6.048 0.000
z 0.000 0.000 1.586


<r2> (average value of r2) Å2
<r2> 34.114
(<r2>)1/2 5.841