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

using model chemistry: BLYP/6-31+G**

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 BLYP/6-31+G**
 hartrees
Energy at 0K-168.565635
Energy at 298.15K 
HF Energy-168.565635
Nuclear repulsion energy59.473680
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 BLYP/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 3444 3426 249.34 39.18 0.22 0.36
2 Σ 2245 2233 342.51 32.18 0.08 0.15
3 Σ 1235 1229 99.64 24.57 0.24 0.39
4 Π 533 530 2.11 0.69 0.75 0.86
4 Π 533 530 2.11 0.69 0.75 0.86
5 Π 161i 160i 105.45 11.02 0.75 0.86
5 Π 161i 160i 105.45 11.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3833.9 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 3813.6 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 BLYP/6-31+G**
B
0.37055

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.203
N2 0.000 0.000 -0.022
C3 0.000 0.000 -1.200
H4 0.000 0.000 -2.269

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.22492.40263.4720
N21.22491.17772.2470
C32.40261.17771.0694
H43.47202.24701.0694

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 BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.150      
2 N -0.051      
3 C -0.058      
4 H 0.259      


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 -3.154 3.154
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.150 0.000 0.000
y 0.000 -17.150 0.000
z 0.000 0.000 -14.266
Traceless
 xyz
x -1.442 0.000 0.000
y 0.000 -1.442 0.000
z 0.000 0.000 2.885
Polar
3z2-r25.769
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 1.875 0.000 0.000
y 0.000 1.875 0.000
z 0.000 0.000 6.639


<r2> (average value of r2) Å2
<r2> 35.475
(<r2>)1/2 5.956

Conformer 2 (CS)

Jump to S1C1
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-168.565791
Energy at 298.15K-168.566340
HF Energy-168.565791
Nuclear repulsion energy59.454853
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 BLYP/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 A' 3403 3385 189.69      
2 A' 2217 2205 357.71      
3 A' 1242 1235 82.62      
4 A' 522 519 7.73      
5 A' 282 280 146.78      
6 A" 527 525 3.40      

Unscaled Zero Point Vibrational Energy (zpe) 4096.4 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 4074.7 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 BLYP/6-31+G**
ABC
125.05509 0.37258 0.37147

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.763 -0.926 0.000
N2 0.000 0.030 0.000
C3 0.818 0.885 0.000
H4 1.194 1.889 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.22262.40383.4286
N21.22261.18362.2101
C32.40381.18361.0723
H43.42862.21011.0723

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 174.890 N2 C3 H4 156.862
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.126      
2 N 0.028      
3 C -0.122      
4 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.430 2.565 0.000 2.937
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.256 0.880 0.000
y 0.880 -14.570 0.000
z 0.000 0.000 -17.164
Traceless
 xyz
x -1.389 0.880 0.000
y 0.880 2.640 0.000
z 0.000 0.000 -1.251
Polar
3z2-r2-2.503
x2-y2-2.686
xy0.880
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.129 2.384 0.000
y 2.384 4.501 0.000
z 0.000 0.000 1.903


<r2> (average value of r2) Å2
<r2> 35.428
(<r2>)1/2 5.952