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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-261.600297
Energy at 298.15K 
HF Energy-260.647384
Nuclear repulsion energy163.989900
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/Def2TZVPP
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 3314 3314 0.51      
2 A1 1505 1505 14.46      
3 A1 1368 1368 5.80      
4 A1 1067 1067 1.84      
5 A1 1042 1042 17.83      
6 A1 906 906 23.76      
7 A2 915 915 0.00      
8 A2 655 655 0.00      
9 B1 881 881 37.87      
10 B1 646 646 1.58      
11 B2 3299 3299 0.11      
12 B2 1624 1624 0.03      
13 B2 1226 1226 3.52      
14 B2 968 968 21.13      
15 B2 934 934 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 10175.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10175.4 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/Def2TZVPP
ABC
0.35286 0.32587 0.16941

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.123
N2 0.000 1.127 0.352
N3 0.000 -1.127 0.352
C4 0.000 0.713 -0.877
C5 0.000 -0.713 -0.877
H6 0.000 1.407 -1.698
H7 0.000 -1.407 -1.698

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36521.36522.12362.12363.15233.1523
N21.36522.25351.29742.21252.06923.2590
N31.36522.25352.21251.29743.25902.0692
C42.12361.29742.21251.42531.07472.2725
C52.12362.21251.29741.42532.27251.0747
H63.15232.06923.25901.07472.27252.8131
H73.15233.25902.06922.27251.07472.8131

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.766 O1 N3 C5 105.766
N2 O1 N3 111.243 N2 C4 C5 108.613
N2 C4 H6 121.171 N3 C5 C4 108.613
N3 C5 H7 121.171 C4 C5 H7 130.216
C5 C4 H6 130.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability