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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: HF/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-184.613277
Energy at 298.15K-184.612657
HF Energy-184.613277
Nuclear repulsion energy77.418003
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/aug-cc-pVDZ
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 2721 2478 0.00      
2 Σg 922 840 0.00      
3 Σu 2515 2290 4.09      
4 Πg 598 545 0.00      
4 Πg 598 545 0.00      
5 Πu 279 254 27.03      
5 Πu 279 254 27.03      

Unscaled Zero Point Vibrational Energy (zpe) 3955.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 3602.1 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/aug-cc-pVDZ
B
0.15913

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.700
C2 0.000 0.000 -0.700
N3 0.000 0.000 1.834
N4 0.000 0.000 -1.834

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.39921.13432.5335
C21.39922.53351.1343
N31.13432.53353.6678
N42.53351.13433.6678

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 HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.267      
2 C 0.267      
3 N -0.267      
4 N -0.267      


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 -21.228 0.000 0.000
y 0.000 -21.228 0.000
z 0.000 0.000 -30.891
Traceless
 xyz
x 4.832 0.000 0.000
y 0.000 4.832 0.000
z 0.000 0.000 -9.663
Polar
3z2-r2-19.327
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 3.083 0.000 0.000
y 0.000 3.083 0.000
z 0.000 0.000 7.530


<r2> (average value of r2) Å2
<r2> 68.228
(<r2>)1/2 8.260