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: LSDA/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B2
Energy calculated at LSDA/3-21G*
 hartrees
Energy at 0K-92.921437
Energy at 298.15K-92.922782
HF Energy-92.921437
Nuclear repulsion energy27.329691
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 LSDA/3-21G*
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 2871 2819 1.17      
2 A1 1661 1631 3.48      
3 A1 1362 1337 19.29      
4 B1 972 954 60.93      
5 B2 2898 2846 14.00      
6 B2 897 881 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 5330.1 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 5234.1 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 LSDA/3-21G*
ABC
9.64115 1.27928 1.12942

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.502
N2 0.000 0.000 0.748
H3 0.000 0.931 -1.111
H4 0.000 -0.931 -1.111

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.25041.11261.1126
N21.25042.07932.0793
H31.11262.07931.8628
H41.11262.07931.8628

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 123.164 N2 C1 H4 123.164
H3 C1 H4 113.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 N -0.237      
3 H 0.244      
4 H 0.244      


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 -2.347 2.347
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.604 0.000 0.000
y 0.000 -10.829 0.000
z 0.000 0.000 -12.581
Traceless
 xyz
x -0.899 0.000 0.000
y 0.000 1.763 0.000
z 0.000 0.000 -0.864
Polar
3z2-r2-1.728
x2-y2-1.775
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.921 0.000 0.000
y 0.000 2.018 0.000
z 0.000 0.000 3.027


<r2> (average value of r2) Å2
<r2> 17.132
(<r2>)1/2 4.139