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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: HF/6-311G*

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 HF/6-311G*
 hartrees
Energy at 0K-184.633580
Energy at 298.15K-184.632999
HF Energy-184.633580
Nuclear repulsion energy77.861090
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 HF/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σg 2729 2468 0.00      
2 Σg 921 833 0.00      
3 Σu 2524 2283 3.13      
4 Πg 626 566 0.00      
4 Πg 626 566 0.00      
5 Πu 286 258 24.45      
5 Πu 286 258 24.45      

Unscaled Zero Point Vibrational Energy (zpe) 3998.8 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 3616.5 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 HF/6-311G*
B
0.16091

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.696
C2 0.000 0.000 -0.696
N3 0.000 0.000 1.824
N4 0.000 0.000 -1.824

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.39251.12732.5198
C21.39252.51981.1273
N31.12732.51983.6472
N42.51981.12733.6472

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.258      
2 C 0.258      
3 N -0.258      
4 N -0.258      


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 0.000 0.000 0.000 0.000


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.033 0.000 0.000
y 0.000 -21.033 0.000
z 0.000 0.000 -30.672
Traceless
 xyz
x 4.819 0.000 0.000
y 0.000 4.819 0.000
z 0.000 0.000 -9.639
Polar
3z2-r2-19.278
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 2.126 0.000 0.000
y 0.000 2.126 0.000
z 0.000 0.000 6.944


<r2> (average value of r2) Å2
<r2> 67.517
(<r2>)1/2 8.217