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 H2CN (Dihydrogen cyanide radical)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B2
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-93.861016
Energy at 298.15K-93.862354
HF Energy-93.861016
Nuclear repulsion energy27.282278
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2913 2865 0.17      
2 A1 1693 1666 1.26      
3 A1 1355 1333 12.11      
4 B1 940 925 34.64      
5 B2 2954 2906 18.13      
6 B2 901 886 3.24      

Unscaled Zero Point Vibrational Energy (zpe) 5378.1 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 5289.4 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 PBEPBEultrafine/6-31G*
ABC
9.44338 1.27922 1.12661

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.507
N2 0.000 0.000 0.748
H3 0.000 0.941 -1.098
H4 0.000 -0.941 -1.098

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.25491.11131.1113
N21.25492.07192.0719
H31.11132.07191.8822
H41.11132.07191.8822

picture of Dihydrogen cyanide radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N2 C1 H3 122.128 N2 C1 H4 122.128
H3 C1 H4 115.745
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.156      
2 N -0.217      
3 H 0.187      
4 H 0.187      


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 -2.317 2.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.539 0.000 0.000
y 0.000 -10.887 0.000
z 0.000 0.000 -12.549
Traceless
 xyz
x -0.821 0.000 0.000
y 0.000 1.657 0.000
z 0.000 0.000 -0.836
Polar
3z2-r2-1.672
x2-y2-1.652
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.177 0.000 0.000
y 0.000 2.198 0.000
z 0.000 0.000 3.343


<r2> (average value of r2) Å2
<r2> 17.130
(<r2>)1/2 4.139