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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-185.468580
Energy at 298.15K-185.467739
HF Energy-185.468580
Nuclear repulsion energy75.863559
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 PBEPBEultrafine/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 2330 2315 0.00      
2 Σg 873 867 0.00      
3 Σu 2158 2145 0.39      
4 Πg 523 520 0.00      
4 Πg 523 520 0.00      
5 Πu 237 236 18.16      
5 Πu 237 236 18.16      

Unscaled Zero Point Vibrational Energy (zpe) 3440.5 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 3419.6 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 PBEPBEultrafine/aug-cc-pVDZ
B
0.15444

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

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 1.868
N4 0.000 0.000 -1.868

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.38091.17742.5584
C21.38092.55841.1774
N31.17742.55843.7358
N42.55841.17743.7358

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 PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.259      
2 C 0.259      
3 N -0.259      
4 N -0.259      


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 -21.126 0.000 0.000
y 0.000 -21.126 0.000
z 0.000 0.000 -30.043
Traceless
 xyz
x 4.458 0.000 0.000
y 0.000 4.458 0.000
z 0.000 0.000 -8.916
Polar
3z2-r2-17.832
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 3.290 0.000 0.000
y 0.000 3.290 0.000
z 0.000 0.000 8.906


<r2> (average value of r2) Å2
<r2> 69.619
(<r2>)1/2 8.344