return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CN2 (3H-Diazirin-3-ylidene)

using model chemistry: MP2=FULL/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/cc-pVQZ
 hartrees
Energy at 0K-147.292603
Energy at 298.15K-147.292443
HF Energy-146.671217
Nuclear repulsion energy52.162321
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 MP2=FULL/cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1521 1455 13.70      
2 A1 1122 1074 11.33      
3 B2 1060 1014 2.53      

Unscaled Zero Point Vibrational Energy (zpe) 1850.9 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 1771.5 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 MP2=FULL/cc-pVQZ
ABC
1.44549 1.33374 0.69368

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.859
N2 0.000 0.645 -0.368
N3 0.000 -0.645 -0.368

Atom - Atom Distances (Å)
  C1 N2 N3
C11.38601.3860
N21.38601.2906
N31.38601.2906

picture of 3H-Diazirin-3-ylidene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 62.252 C1 N3 N2 62.252
N2 C1 N3 55.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability