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 CH2N2 (diazirine)

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-148.320357
Energy at 298.15K-148.323250
HF Energy-147.834948
Nuclear repulsion energy63.925290
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 QCISD/6-31G**
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 3218 3030 5.19      
2 A1 1716 1615 21.10      
3 A1 1547 1456 2.23      
4 A1 1085 1022 2.48      
5 A2 1017 958 0.00      
6 B1 3335 3139 17.19      
7 B1 1170 1101 5.14      
8 B2 1056 994 30.29      
9 B2 870 819 11.79      

Unscaled Zero Point Vibrational Energy (zpe) 7506.5 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 7066.6 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 QCISD/6-31G**
ABC
1.34923 0.79896 0.55977

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.803
N2 0.000 0.620 -0.538
N3 0.000 -0.620 -0.538
H4 0.929 0.000 1.353
H5 -0.929 0.000 1.353

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.47731.47731.07941.0794
N21.47731.23942.19592.1959
N31.47731.23942.19592.1959
H41.07942.19592.19591.8578
H51.07942.19592.19591.8578

picture of diazirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 65.199 C1 N3 N2 65.199
N2 C1 N3 49.602 N2 C1 H4 117.539
N2 C1 H5 117.539 N3 C1 H4 117.539
N3 C1 H5 117.539 H4 C1 H5 118.761
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability