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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: B2PLYP/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 B2PLYP/6-31+G**
 hartrees
Energy at 0K-185.500341
Energy at 298.15K-185.499524
HF Energy-185.301354
Nuclear repulsion energy76.064131
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 B2PLYP/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 2352 2240 0.00      
2 Σg 879 837 0.00      
3 Σu 2179 2076 1.43      
4 Πg 535 510 0.00      
4 Πg 535 510 0.00      
5 Πu 243 232 18.09      
5 Πu 243 232 18.09      

Unscaled Zero Point Vibrational Energy (zpe) 3483.3 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 3317.5 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 B2PLYP/6-31+G**
B
0.15510

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31+G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.691
C2 0.000 0.000 -0.691
N3 0.000 0.000 1.863
N4 0.000 0.000 -1.863

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.38211.17222.5543
C21.38212.55431.1722
N31.17222.55433.7265
N42.55431.17223.7265

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 B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.481      
2 C 0.481      
3 N -0.481      
4 N -0.481      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.465 0.000 0.000
y 0.000 2.465 0.000
z 0.000 0.000 8.322


<r2> (average value of r2) Å2
<r2> 69.600
(<r2>)1/2 8.343