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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: B1B95/6-31G

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 B1B95/6-31G
 hartrees
Energy at 0K-185.531056
Energy at 298.15K-185.530286
HF Energy-185.531056
Nuclear repulsion energy76.296491
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 B1B95/6-31G
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 2449 2336 0.00      
2 Σg 900 858 0.00      
3 Σu 2236 2132 0.43      
4 Πg 579 552 0.00      
4 Πg 579 552 0.00      
5 Πu 238 227 12.81      
5 Πu 238 227 12.81      

Unscaled Zero Point Vibrational Energy (zpe) 3609.0 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 3441.9 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 B1B95/6-31G
B
0.15626

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.686
C2 0.000 0.000 -0.686
N3 0.000 0.000 1.857
N4 0.000 0.000 -1.857

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.37131.17152.5428
C21.37132.54281.1715
N31.17152.54283.7144
N42.54281.17153.7144

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 B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.162      
2 C 0.162      
3 N -0.162      
4 N -0.162      


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 -20.601 0.000 0.000
y 0.000 -20.601 0.000
z 0.000 0.000 -30.415
Traceless
 xyz
x 4.907 0.000 0.000
y 0.000 4.907 0.000
z 0.000 0.000 -9.814
Polar
3z2-r2-19.629
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 1.827 0.000 0.000
y 0.000 1.827 0.000
z 0.000 0.000 7.575


<r2> (average value of r2) Å2
<r2> 68.839
(<r2>)1/2 8.297