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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: B3LYPultrafine/3-21G

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 B3LYPultrafine/3-21G
 hartrees
Energy at 0K-184.636902
Energy at 298.15K-184.636548
HF Energy-184.636902
Nuclear repulsion energy76.648349
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 B3LYPultrafine/3-21G
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 2448 2362 0.00      
2 Σg 897 866 0.00      
3 Σu 2251 2172 0.20      
4 Πg 790 762 0.00      
4 Πg 790 762 0.00      
5 Πu 321 310 10.78      
5 Πu 321 310 10.78      

Unscaled Zero Point Vibrational Energy (zpe) 3908.9 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 3771.7 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 B3LYPultrafine/3-21G
B
0.15777

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/3-21G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.682
C2 0.000 0.000 -0.682
N3 0.000 0.000 1.849
N4 0.000 0.000 -1.849

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.36321.16702.5301
C21.36322.53011.1670
N31.16702.53013.6971
N42.53011.16703.6971

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 B3LYPultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.417      
2 C 0.417      
3 N -0.417      
4 N -0.417      


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 -20.597 0.000 0.000
y 0.000 -20.597 0.000
z 0.000 0.000 -29.699
Traceless
 xyz
x 4.551 0.000 0.000
y 0.000 4.551 0.000
z 0.000 0.000 -9.102
Polar
3z2-r2-18.203
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 1.620 0.000 0.000
y 0.000 1.620 0.000
z 0.000 0.000 6.832


<r2> (average value of r2) Å2
<r2> 68.174
(<r2>)1/2 8.257