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

using model chemistry: PBEPBE/aug-cc-pVDZ

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 PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-168.430683
Energy at 298.15K 
HF Energy-168.430683
Nuclear repulsion energy59.799933
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 PBEPBE/aug-cc-pVDZ
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 3449 3428 245.63 41.90 0.22 0.37
2 Σ 2276 2262 365.55 34.10 0.03 0.07
3 Σ 1279 1271 92.53 28.80 0.20 0.33
4 Π 526 523 5.19 0.09 0.75 0.86
4 Π 526 523 5.19 0.09 0.75 0.86
5 Π 276i 274i 72.00 4.31 0.75 0.86
5 Π 276i 274i 72.00 4.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3751.7 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 3728.8 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 PBEPBE/aug-cc-pVDZ
B
0.37455

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.194
N2 0.000 0.000 -0.016
C3 0.000 0.000 -1.195
H4 0.000 0.000 -2.268

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.21052.38883.4625
N21.21051.17842.2521
C32.38881.17841.0737
H43.46252.25211.0737

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 PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.611      
2 N 0.422      
3 C 0.391      
4 H -0.203      


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 -2.884 2.884
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.069 0.000 0.000
y 0.000 -17.069 0.000
z 0.000 0.000 -14.144
Traceless
 xyz
x -1.462 0.000 0.000
y 0.000 -1.462 0.000
z 0.000 0.000 2.924
Polar
3z2-r25.848
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 2.525 0.000 0.000
y 0.000 2.525 0.000
z 0.000 0.000 6.700


<r2> (average value of r2) Å2
<r2> 35.171
(<r2>)1/2 5.931

Conformer 2 (CS)

Jump to S1C1
Energy calculated at PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-168.431130
Energy at 298.15K-168.431781
HF Energy-168.431130
Nuclear repulsion energy59.771780
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 PBEPBE/aug-cc-pVDZ
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' 3393 3373 177.33      
2 A' 2241 2228 386.01      
3 A' 1285 1277 72.26      
4 A' 527 524 8.01      
5 A' 357 355 137.93      
6 A" 525 522 6.01      

Unscaled Zero Point Vibrational Energy (zpe) 4164.5 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 4139.1 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 PBEPBE/aug-cc-pVDZ
ABC
96.04498 0.37722 0.37575

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.975 -0.683 0.000
N2 0.000 0.030 0.000
C3 1.028 0.622 0.000
H4 1.628 1.518 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20762.39013.4081
N21.20761.18612.2052
C32.39011.18611.0783
H43.40812.20521.0783

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 173.717 N2 C3 H4 153.708
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.582      
2 N 0.462      
3 C 0.392      
4 H -0.272      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.814 1.884 0.000 2.616
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.512 1.438 0.000
y 1.438 -15.135 0.000
z 0.000 0.000 -17.105
Traceless
 xyz
x -0.392 1.438 0.000
y 1.438 1.674 0.000
z 0.000 0.000 -1.282
Polar
3z2-r2-2.564
x2-y2-1.377
xy1.438
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.559 1.880 0.000
y 1.880 3.752 0.000
z 0.000 0.000 2.542


<r2> (average value of r2) Å2
<r2> 35.100
(<r2>)1/2 5.924