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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: LSDA/6-31G**

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 LSDA/6-31G**
 hartrees
Energy at 0K-184.589602
Energy at 298.15K-184.588840
HF Energy-184.589602
Nuclear repulsion energy76.393586
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 LSDA/6-31G**
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 2397 2352 0.00      
2 Σg 902 885 0.00      
3 Σu 2223 2181 0.21      
4 Πg 564 553 0.00      
4 Πg 564 553 0.00      
5 Πu 248 243 18.36      
5 Πu 248 243 18.36      

Unscaled Zero Point Vibrational Energy (zpe) 3572.2 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 3505.4 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 LSDA/6-31G**
B
0.15674

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.684
C2 0.000 0.000 -0.684
N3 0.000 0.000 1.855
N4 0.000 0.000 -1.855

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.36711.17112.5382
C21.36712.53821.1711
N31.17112.53823.7093
N42.53821.17113.7093

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 LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.389      
2 C 0.389      
3 N -0.389      
4 N -0.389      


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 -20.501 0.000 0.000
y 0.000 -20.501 0.000
z 0.000 0.000 -29.122
Traceless
 xyz
x 4.310 0.000 0.000
y 0.000 4.310 0.000
z 0.000 0.000 -8.621
Polar
3z2-r2-17.241
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 2.024 0.000 0.000
y 0.000 2.024 0.000
z 0.000 0.000 7.780


<r2> (average value of r2) Å2
<r2> 68.364
(<r2>)1/2 8.268