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

using model chemistry: B2PLYP/6-311G**

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 B2PLYP/6-311G**
 hartrees
Energy at 0K-168.478711
Energy at 298.15K 
HF Energy-168.299241
Nuclear repulsion energy60.334356
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 B2PLYP/6-311G**
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 3530 3530 258.80 28.40 0.26 0.41
2 Σ 2294 2294 376.24 14.32 0.08 0.15
3 Σ 1295 1295 83.27 26.39 0.29 0.45
4 Π 560 560 1.45 0.21 0.75 0.86
4 Π 560 560 1.45 0.21 0.75 0.86
5 Π 122i 122i 86.86 4.57 0.75 0.86
5 Π 122i 122i 86.86 4.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3997.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3997.2 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 B2PLYP/6-311G**
B
0.38122

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G**

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 -0.017
C3 0.000 0.000 -1.185
H4 0.000 0.000 -2.244

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20022.36853.4276
N21.20021.16832.2274
C32.36851.16831.0591
H43.42762.22741.0591

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 B2PLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.330      
2 N 0.084      
3 C 0.042      
4 H 0.204      


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 -2.974 2.974
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.714 0.000 0.000
y 0.000 -16.714 0.000
z 0.000 0.000 -14.066
Traceless
 xyz
x -1.324 0.000 0.000
y 0.000 -1.324 0.000
z 0.000 0.000 2.647
Polar
3z2-r25.295
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 1.458 0.000 0.000
y 0.000 1.458 0.000
z 0.000 0.000 5.800


<r2> (average value of r2) Å2
<r2> 34.552
(<r2>)1/2 5.878

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B2PLYP/6-311G**
 hartrees
Energy at 0K-168.478740
Energy at 298.15K-168.479263
HF Energy-168.298282
Nuclear repulsion energy60.323189
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 B2PLYP/6-311G**
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' 3510 3510 226.37      
2 A' 2280 2280 384.81      
3 A' 1298 1298 73.04      
4 A' 559 559 2.44      
5 A' 219 219 123.96      
6 A" 560 560 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 4212.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4212.8 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 B2PLYP/6-311G**
ABC
247.83468 0.38226 0.38167

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.757 -0.908 0.000
N2 0.000 0.022 0.000
C3 0.798 0.880 0.000
H4 1.269 1.830 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19862.36933.4060
N21.19861.17192.2094
C32.36931.17191.0605
H43.40602.20941.0605

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 176.268 N2 C3 H4 163.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.323      
2 N 0.106      
3 C 0.018      
4 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.542 2.403 0.000 2.855
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.431 1.035 0.000
y 1.035 -14.518 0.000
z 0.000 0.000 -16.727
Traceless
 xyz
x -0.808 1.035 0.000
y 1.035 2.061 0.000
z 0.000 0.000 -1.252
Polar
3z2-r2-2.505
x2-y2-1.913
xy1.035
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.404 2.158 0.000
y 2.158 3.911 0.000
z 0.000 0.000 1.460


<r2> (average value of r2) Å2
<r2> 34.531
(<r2>)1/2 5.876