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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: HSEh1PBE/6-31+G**

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 HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-185.457639
Energy at 298.15K-185.456923
HF Energy-185.457639
Nuclear repulsion energy76.570294
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 HSEh1PBE/6-31+G**
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 2470 2358 0.00      
2 Σg 898 858 0.00      
3 Σu 2297 2194 0.09      
4 Πg 584 558 0.00      
4 Πg 584 558 0.00      
5 Πu 255 243 18.39      
5 Πu 255 243 18.39      

Unscaled Zero Point Vibrational Energy (zpe) 3671.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 3505.2 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 HSEh1PBE/6-31+G**
B
0.15693

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.690
C2 0.000 0.000 -0.690
N3 0.000 0.000 1.851
N4 0.000 0.000 -1.851

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.38001.16142.5414
C21.38002.54141.1614
N31.16142.54143.7029
N42.54141.16143.7029

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 HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.518      
2 C 0.518      
3 N -0.518      
4 N -0.518      


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 -21.041 0.000 0.000
y 0.000 -21.041 0.000
z 0.000 0.000 -30.114
Traceless
 xyz
x 4.536 0.000 0.000
y 0.000 4.536 0.000
z 0.000 0.000 -9.073
Polar
3z2-r2-18.146
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 2.422 0.000 0.000
y 0.000 2.422 0.000
z 0.000 0.000 8.361


<r2> (average value of r2) Å2
<r2> 68.733
(<r2>)1/2 8.291