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All results from a given calculation for CH2N2 (diazirine)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-148.252061
Energy at 298.15K-148.254983
HF Energy-147.834123
Nuclear repulsion energy64.481647
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/6-31G*
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 3250 3008 5.01      
2 A1 1825 1689 26.88      
3 A1 1579 1462 2.26      
4 A1 1132 1048 2.60      
5 A2 1044 967 0.00      
6 B1 3362 3113 17.02      
7 B1 1202 1113 4.90      
8 B2 1097 1015 30.25      
9 B2 916 848 18.69      

Unscaled Zero Point Vibrational Energy (zpe) 7702.8 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 7131.3 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 CISD/6-31G*
ABC
1.38009 0.80872 0.56978

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.797
N2 0.000 0.612 -0.534
N3 0.000 -0.612 -0.534
H4 0.928 0.000 1.349
H5 -0.928 0.000 1.349

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.46491.46491.07991.0799
N21.46491.22332.18662.1866
N31.46491.22332.18662.1866
H41.07992.18662.18661.8565
H51.07992.18662.18661.8565

picture of diazirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 65.320 C1 N3 N2 65.320
N2 C1 N3 49.360 N2 C1 H4 117.667
N2 C1 H5 117.667 N3 C1 H4 117.667
N3 C1 H5 117.667 H4 C1 H5 118.537
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability