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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: LSDA/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 LSDA/aug-cc-pVDZ
 hartrees
Energy at 0K-184.606616
Energy at 298.15K-184.605812
HF Energy-184.606616
Nuclear repulsion energy76.385157
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/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 2386 2359 0.00      
2 Σg 898 887 0.00      
3 Σu 2202 2178 0.39      
4 Πg 537 531 0.00      
4 Πg 537 531 0.00      
5 Πu 240 238 19.99      
5 Πu 240 238 19.99      

Unscaled Zero Point Vibrational Energy (zpe) 3520.9 cm-1
Scaled (by 0.9887) Zero Point Vibrational Energy (zpe) 3481.1 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 LSDA/aug-cc-pVDZ
B
0.15662

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.685
C2 0.000 0.000 -0.685
N3 0.000 0.000 1.855
N4 0.000 0.000 -1.855

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.36991.17012.5400
C21.36992.54001.1701
N31.17012.54003.7101
N42.54001.17013.7101

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/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.083      
2 C 0.083      
3 N -0.083      
4 N -0.083      


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 -21.104 0.000 0.000
y 0.000 -21.104 0.000
z 0.000 0.000 -30.131
Traceless
 xyz
x 4.513 0.000 0.000
y 0.000 4.513 0.000
z 0.000 0.000 -9.027
Polar
3z2-r2-18.054
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 3.262 0.000 0.000
y 0.000 3.262 0.000
z 0.000 0.000 8.740


<r2> (average value of r2) Å2
<r2> 68.867
(<r2>)1/2 8.299