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All results from a given calculation for CH2N2 (diazirine)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-147.291418
Energy at 298.15K-147.294127
HF Energy-146.939251
Nuclear repulsion energy60.972805
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/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 3191 3093 0.00      
2 A1 1528 1481 0.09      
3 A1 1252 1213 8.20      
4 A1 853 827 6.06      
5 A2 947 918 0.00      
6 B1 3324 3222 5.87      
7 B1 1085 1051 2.16      
8 B2 969 939 64.40      
9 B2 655 635 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 6902.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 6689.5 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 QCISD/3-21G
ABC
1.25009 0.71338 0.50290

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.867
N2 0.000 0.646 -0.570
N3 0.000 -0.646 -0.570
H4 0.944 0.000 1.391
H5 -0.944 0.000 1.391

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.57541.57541.07991.0799
N21.57541.29202.27012.2701
N31.57541.29202.27012.2701
H41.07992.27012.27011.8886
H51.07992.27012.27011.8886

picture of diazirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 65.791 C1 N3 N2 65.791
N2 C1 N3 48.418 N2 C1 H4 116.260
N2 C1 H5 116.260 N3 C1 H4 116.260
N3 C1 H5 116.260 H4 C1 H5 121.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability