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All results from a given calculation for C2N2 (Cyanogen)

using model chemistry: CCD/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 CCD/cc-pVTZ
 hartrees
Energy at 0K-185.308264
Energy at 298.15K-185.307449
HF Energy-184.649540
Nuclear repulsion energy76.715387
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 CCD/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 2480 2315 0.00      
2 Σg 872 815 0.00      
3 Σu 2275 2125 2.29      
4 Πg 522 488 0.00      
4 Πg 522 488 0.00      
5 Πu 247 231 21.04      
5 Πu 247 231 21.04      

Unscaled Zero Point Vibrational Energy (zpe) 3582.9 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 3345.3 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 CCD/cc-pVTZ
B
0.15704

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

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 1.849
N4 0.000 0.000 -1.849

Atom - Atom Distances (Å)
  C1 C2 N3 N4
C11.39081.15352.5443
C21.39082.54431.1535
N31.15352.54433.6978
N42.54431.15353.6978

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