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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: wB97X-D/6-31G*

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 wB97X-D/6-31G*
 hartrees
Energy at 0K-185.578712
Energy at 298.15K-185.577959
HF Energy-185.578712
Nuclear repulsion energy76.589202
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 wB97X-D/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 Σg 2504 2375 0.00      
2 Σg 891 845 0.00      
3 Σu 2319 2199 0.07      
4 Πg 564 535 0.00      
4 Πg 564 535 0.00      
5 Πu 255 242 19.79      
5 Πu 255 242 19.79      

Unscaled Zero Point Vibrational Energy (zpe) 3675.3 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 3486.0 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 wB97X-D/6-31G*
B
0.15678

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.685
C2 0.000 0.000 -0.685
N3 0.000 0.000 1.845
N4 0.000 0.000 -1.845

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.36981.15972.5295
C21.36982.52951.1597
N31.15972.52953.6891
N42.52951.15973.6891

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 wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.409      
2 C 0.409      
3 N -0.409      
4 N -0.409      


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 -20.522 0.000 0.000
y 0.000 -20.522 0.000
z 0.000 0.000 -29.511
Traceless
 xyz
x 4.495 0.000 0.000
y 0.000 4.495 0.000
z 0.000 0.000 -8.989
Polar
3z2-r2-17.978
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 2.021 0.000 0.000
y 0.000 2.021 0.000
z 0.000 0.000 7.409


<r2> (average value of r2) Å2
<r2> 68.441
(<r2>)1/2 8.273