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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: B1B95/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-185.651159
Energy at 298.15K-185.650417
HF Energy-185.651159
Nuclear repulsion energy77.226705
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/aug-cc-pVTZ
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 2472 2369 0.00      
2 Σg 890 853 0.00      
3 Σu 2299 2204 0.00      
4 Πg 558 535 0.00      
4 Πg 558 535 0.00      
5 Πu 254 244 21.67      
5 Πu 254 244 21.67      

Unscaled Zero Point Vibrational Energy (zpe) 3642.3 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 3491.1 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/aug-cc-pVTZ
B
0.15939

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.687
C2 0.000 0.000 -0.687
N3 0.000 0.000 1.836
N4 0.000 0.000 -1.836

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.37471.14882.5235
C21.37472.52351.1488
N31.14882.52353.6723
N42.52351.14883.6723

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/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.369      
2 C 0.369      
3 N -0.369      
4 N -0.369      


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 -20.839 0.000 0.000
y 0.000 -20.839 0.000
z 0.000 0.000 -29.911
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-r2-18.145
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 3.213 0.000 0.000
y 0.000 3.213 0.000
z 0.000 0.000 8.155


<r2> (average value of r2) Å2
<r2> 67.775
(<r2>)1/2 8.233