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: CCSD(T)=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-148.546979
Energy at 298.15K-148.549852
HF Energy-147.887547
Nuclear repulsion energy64.199634
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 CCSD(T)=FULL/aug-cc-pVTZ
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 3180 3065        
2 A1 1673 1613        
3 A1 1514 1459        
4 A1 1038 1000        
5 A2 1001 965        
6 B1 3269 3150        
7 B1 1154 1112        
8 B2 1018 981        
9 B2 840 809        

Unscaled Zero Point Vibrational Energy (zpe) 7343.4 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 7076.8 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 CCSD(T)=FULL/aug-cc-pVTZ
ABC
1.37186 0.79916 0.56396

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.806
N2 0.000 0.614 -0.537
N3 0.000 -0.614 -0.537
H4 0.931 0.000 1.345
H5 -0.931 0.000 1.345

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.47641.47641.07551.0755
N21.47641.22712.18752.1875
N31.47641.22712.18752.1875
H41.07552.18752.18751.8611
H51.07552.18752.18751.8611

picture of diazirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 65.445 C1 N3 N2 65.445
N2 C1 N3 49.111 N2 C1 H4 117.135
N2 C1 H5 117.135 N3 C1 H4 117.135
N3 C1 H5 117.135 H4 C1 H5 119.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability