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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: LSDA/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-184.596676
Energy at 298.15K-184.595919
HF Energy-184.596676
Nuclear repulsion energy76.712997
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(2df,p)
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 2385 2347 0.00      
2 Σg 896 881 0.00      
3 Σu 2214 2178 0.30      
4 Πg 561 552 0.00      
4 Πg 561 552 0.00      
5 Πu 250 246 20.31      
5 Πu 250 246 20.31      

Unscaled Zero Point Vibrational Energy (zpe) 3558.3 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 3501.3 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(2df,p)
B
0.15801

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.681
C2 0.000 0.000 -0.681
N3 0.000 0.000 1.847
N4 0.000 0.000 -1.847

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.36291.16562.5285
C21.36292.52851.1656
N31.16562.52853.6941
N42.52851.16563.6941

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(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.276      
2 C 0.276      
3 N -0.276      
4 N -0.276      


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 -20.441 0.000 0.000
y 0.000 -20.441 0.000
z 0.000 0.000 -29.123
Traceless
 xyz
x 4.341 0.000 0.000
y 0.000 4.341 0.000
z 0.000 0.000 -8.682
Polar
3z2-r2-17.365
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 2.407 0.000 0.000
y 0.000 2.407 0.000
z 0.000 0.000 7.761


<r2> (average value of r2) Å2
<r2> 67.909
(<r2>)1/2 8.241