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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: HF/Def2TZVPP

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 HF/Def2TZVPP
 hartrees
Energy at 0K-184.660675
Energy at 298.15K-184.660072
HF Energy-184.660675
Nuclear repulsion energy77.963269
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 HF/Def2TZVPP
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 2718 2463 0.00      
2 Σg 916 830 0.00      
3 Σu 2522 2286 3.29      
4 Πg 611 554 0.00      
4 Πg 611 554 0.00      
5 Πu 282 256 27.62      
5 Πu 282 256 27.62      

Unscaled Zero Point Vibrational Energy (zpe) 3971.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 3600.0 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 HF/Def2TZVPP
B
0.16121

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.686
C2 0.000 0.000 -0.686
N3 0.000 0.000 1.807
N4 0.000 0.000 -1.807

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.37291.12062.4935
C21.37292.49351.1206
N31.12062.49353.6141
N42.49351.12063.6141

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 HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.052      
2 C 0.052      
3 N -0.052      
4 N -0.052      


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 -21.077 0.000 0.000
y 0.000 -21.077 0.000
z 0.000 0.000 -30.730
Traceless
 xyz
x 4.826 0.000 0.000
y 0.000 4.826 0.000
z 0.000 0.000 -9.653
Polar
3z2-r2-19.305
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 2.651 0.000 0.000
y 0.000 2.651 0.000
z 0.000 0.000 7.273


<r2> (average value of r2) Å2
<r2> 67.450
(<r2>)1/2 8.213