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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-185.138379
Energy at 298.15K-185.137688
HF Energy-184.631576
Nuclear repulsion energy77.010226
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 CISD/6-311G*
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 2573 2381 0.00      
2 Σg 896 829 0.00      
3 Σu 2359 2183 0.15      
4 Πg 580 536 0.00      
4 Πg 580 536 0.00      
5 Πu 266 247 20.54      
5 Πu 266 247 20.54      

Unscaled Zero Point Vibrational Energy (zpe) 3759.9 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 3479.0 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 CISD/6-311G*
B
0.15807

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.695
C2 0.000 0.000 -0.695
N3 0.000 0.000 1.842
N4 0.000 0.000 -1.842

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.39051.14702.5375
C21.39052.53751.1470
N31.14702.53753.6845
N42.53751.14703.6845

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