return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULLultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-168.460335
Energy at 298.15K 
HF Energy-168.280152
Nuclear repulsion energy59.932660
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=FULLultrafine/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 3520 3387 270.51 38.87 0.22 0.36
2 Σ 2269 2183 427.65 31.21 0.04 0.07
3 Σ 1276 1228 97.95 33.78 0.21 0.34
4 Π 531 511 5.31 0.02 0.75 0.86
4 Π 531 511 5.31 0.02 0.75 0.86
5 Π 213i 205i 70.06 4.80 0.75 0.86
5 Π 213i 205i 70.06 4.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3850.7 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 3705.5 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 B2PLYP=FULLultrafine/aug-cc-pVDZ
B
0.37623

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.192
N2 0.000 0.000 -0.018
C3 0.000 0.000 -1.192
H4 0.000 0.000 -2.259

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.21022.38403.4509
N21.21021.17382.2407
C32.38401.17381.0669
H43.45092.24071.0669

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=FULLultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.616      
2 N 0.365      
3 C 0.429      
4 H -0.179      


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 -3.196 3.196
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.138 0.000 0.000
y 0.000 -17.138 0.000
z 0.000 0.000 -14.226
Traceless
 xyz
x -1.456 0.000 0.000
y 0.000 -1.456 0.000
z 0.000 0.000 2.911
Polar
3z2-r25.822
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 2.446 0.000 0.000
y 0.000 2.446 0.000
z 0.000 0.000 6.689


<r2> (average value of r2) Å2
<r2> 35.090
(<r2>)1/2 5.924