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: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B2
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-93.896205
Energy at 298.15K-93.897546
HF Energy-93.896205
Nuclear repulsion energy27.443889
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/TZVP
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 2878 2846 0.11      
2 A1 1683 1665 1.51      
3 A1 1330 1315 16.61      
4 B1 950 940 40.91      
5 B2 2922 2889 14.03      
6 B2 890 880 3.22      

Unscaled Zero Point Vibrational Energy (zpe) 5326.6 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 5267.0 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/TZVP
ABC
9.43732 1.29816 1.14118

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.503
N2 0.000 0.000 0.743
H3 0.000 0.941 -1.090
H4 0.000 -0.941 -1.090

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.24561.10931.1093
N21.24562.06022.0602
H31.10932.06021.8828
H41.10932.06021.8828

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 121.941 N2 C1 H4 121.941
H3 C1 H4 116.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.180      
2 N -0.103      
3 H 0.142      
4 H 0.142      


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 -2.465 2.465
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.906 0.000 0.000
y 0.000 -11.132 0.000
z 0.000 0.000 -13.049
Traceless
 xyz
x -0.816 0.000 0.000
y 0.000 1.846 0.000
z 0.000 0.000 -1.030
Polar
3z2-r2-2.060
x2-y2-1.774
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.712 0.000 0.000
y 0.000 2.451 0.000
z 0.000 0.000 3.815


<r2> (average value of r2) Å2
<r2> 17.248
(<r2>)1/2 4.153