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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: B3LYP/CEP-31G*

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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-31.029494
Energy at 298.15K-31.028651
HF Energy-31.029494
Nuclear repulsion energy35.588779
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 B3LYP/CEP-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 Σg 2436 2352 0.00      
2 Σg 880 850 0.00      
3 Σu 2257 2179 2.39      
4 Πg 524 506 0.00      
4 Πg 524 506 0.00      
5 Πu 243 235 14.51      
5 Πu 243 235 14.51      

Unscaled Zero Point Vibrational Energy (zpe) 3553.6 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 3431.7 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 B3LYP/CEP-31G*
B
0.15097

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.706
C2 0.000 0.000 -0.706
N3 0.000 0.000 1.887
N4 0.000 0.000 -1.887

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.41141.18122.5926
C21.41142.59261.1812
N31.18122.59263.7738
N42.59261.18123.7738

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.448      
2 C -0.448      
3 N 0.448      
4 N 0.448      


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 -20.853 0.000 0.000
y 0.000 -20.853 0.000
z 0.000 0.000 -29.458
Traceless
 xyz
x 4.303 0.000 0.000
y 0.000 4.303 0.000
z 0.000 0.000 -8.606
Polar
3z2-r2-17.211
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 2.300 0.000 0.000
y 0.000 2.300 0.000
z 0.000 0.000 8.035


<r2> (average value of r2) Å2
<r2> 54.404
(<r2>)1/2 7.376