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All results from a given calculation for CH2N2 (diazirine)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-147.284904
Energy at 298.15K-147.287533
HF Energy-146.928560
Nuclear repulsion energy60.032308
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 MP2/3-21G*
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 3237 3079 0.11      
2 A1 1543 1468 0.18      
3 A1 1012 962 0.01      
4 A1 744 708 9.53      
5 A2 973 926 0.00      
6 B1 3380 3216 5.80      
7 B1 1099 1046 1.88      
8 B2 1012 963 38.92      
9 B2 609 580 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 6804.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 6473.0 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 MP2/3-21G*
ABC
1.16014 0.71940 0.49033

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
N2 0.000 0.674 -0.568
N3 0.000 -0.674 -0.568
H4 0.943 0.000 1.383
H5 -0.943 0.000 1.383

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.58181.58181.07681.0768
N21.58181.34892.26932.2693
N31.58181.34892.26932.2693
H41.07682.26932.26931.8856
H51.07682.26932.26931.8856

picture of diazirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 64.762 C1 N3 N2 64.762
N2 C1 N3 50.476 N2 C1 H4 115.910
N2 C1 H5 115.910 N3 C1 H4 115.910
N3 C1 H5 115.910 H4 C1 H5 122.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability