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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: wB97X-D/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-185.588942
Energy at 298.15K-185.588231
HF Energy-185.588942
Nuclear repulsion energy76.887408
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(2df,p)
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 2490 2490 0.00      
2 Σg 885 885 0.00      
3 Σu 2308 2308 0.03      
4 Πg 576 576 0.00      
4 Πg 576 576 0.00      
5 Πu 261 261 22.32      
5 Πu 261 261 22.32      

Unscaled Zero Point Vibrational Energy (zpe) 3678.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3678.4 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 wB97X-D/6-31G(2df,p)
B
0.15795

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.691
C2 0.000 0.000 -0.691
N3 0.000 0.000 1.844
N4 0.000 0.000 -1.844

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.38221.15332.5355
C21.38222.53551.1533
N31.15332.53553.6887
N42.53551.15333.6887

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(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.294      
2 C 0.294      
3 N -0.294      
4 N -0.294      


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 -20.429 0.000 0.000
y 0.000 -20.429 0.000
z 0.000 0.000 -29.430
Traceless
 xyz
x 4.501 0.000 0.000
y 0.000 4.501 0.000
z 0.000 0.000 -9.001
Polar
3z2-r2-18.002
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 2.415 0.000 0.000
y 0.000 2.415 0.000
z 0.000 0.000 7.406


<r2> (average value of r2) Å2
<r2> 67.988
(<r2>)1/2 8.245