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 C2H2N2O (Furazan)

using model chemistry: CCSD/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-261.662383
Energy at 298.15K 
HF Energy-260.656831
Nuclear repulsion energy164.625926
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/cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at CCSD/cc-pVQZ
ABC
0.35493 0.32898 0.17073

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.118
N2 0.000 1.120 0.353
N3 0.000 -1.120 0.353
C4 0.000 0.711 -0.875
C5 0.000 -0.711 -0.875
H6 0.000 1.406 -1.693
H7 0.000 -1.406 -1.693

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.35621.35622.11622.11623.14353.1435
N21.35622.24011.29502.20482.06653.2514
N31.35622.24012.20481.29503.25142.0665
C42.11621.29502.20481.42131.07392.2696
C52.11622.20481.29501.42132.26961.0739
H63.14352.06653.25141.07392.26962.8129
H73.14353.25142.06652.26961.07392.8129

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.893 O1 N3 C5 105.893
N2 O1 N3 111.353 N2 C4 C5 108.431
N2 C4 H6 121.182 N3 C5 C4 108.431
N3 C5 H7 121.182 C4 C5 H7 130.387
C5 C4 H6 130.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability