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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: PBE1PBE/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 PBE1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-185.457793
Energy at 298.15K-185.457026
HF Energy-185.457793
Nuclear repulsion energy76.540405
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 PBE1PBE/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 2469 2374 0.00      
2 Σg 896 862 0.00      
3 Σu 2283 2195 0.00      
4 Πg 546 525 0.00      
4 Πg 546 525 0.00      
5 Πu 250 240 20.67      
5 Πu 250 240 20.67      

Unscaled Zero Point Vibrational Energy (zpe) 3619.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 3480.5 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 PBE1PBE/aug-cc-pVDZ
B
0.15675

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVDZ

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 1.852
N4 0.000 0.000 -1.852

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.38211.16122.5433
C21.38212.54331.1612
N31.16122.54333.7045
N42.54331.16123.7045

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 PBE1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.291      
2 C 0.291      
3 N -0.291      
4 N -0.291      


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 -21.020 0.000 0.000
y 0.000 -21.020 0.000
z 0.000 0.000 -30.064
Traceless
 xyz
x 4.522 0.000 0.000
y 0.000 4.522 0.000
z 0.000 0.000 -9.044
Polar
3z2-r2-18.088
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 3.190 0.000 0.000
y 0.000 3.190 0.000
z 0.000 0.000 8.341


<r2> (average value of r2) Å2
<r2> 68.775
(<r2>)1/2 8.293