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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: HSEh1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at HSEh1PBE/3-21G*
 hartrees
Energy at 0K-184.431791
Energy at 298.15K-184.431444
HF Energy-184.431791
Nuclear repulsion energy76.752333
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 HSEh1PBE/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 Σg 2479 2380 0.00      
2 Σg 908 871 0.00      
3 Σu 2273 2182 0.17      
4 Πg 796 764 0.00      
4 Πg 796 764 0.00      
5 Πu 324 311 10.99      
5 Πu 324 311 10.99      

Unscaled Zero Point Vibrational Energy (zpe) 3949.8 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 3791.4 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 HSEh1PBE/3-21G*
B
0.15821

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.681
C2 0.000 0.000 -0.681
N3 0.000 0.000 1.846
N4 0.000 0.000 -1.846

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.36111.16552.5266
C21.36112.52661.1655
N31.16552.52663.6921
N42.52661.16553.6921

picture of Cyanogen state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 180.000 C2 C1 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.432      
2 C 0.432      
3 N -0.432      
4 N -0.432      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.691 0.000 0.000
y 0.000 -20.691 0.000
z 0.000 0.000 -29.757
Traceless
 xyz
x 4.533 0.000 0.000
y 0.000 4.533 0.000
z 0.000 0.000 -9.065
Polar
3z2-r2-18.131
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 1.628 0.000 0.000
y 0.000 1.628 0.000
z 0.000 0.000 6.833


<r2> (average value of r2) Å2
<r2> 68.078
(<r2>)1/2 8.251