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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-261.592917
Energy at 298.15K 
HF Energy-260.637350
Nuclear repulsion energy163.946270
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/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 3312 3165 0.43      
2 A1 1506 1439 14.22      
3 A1 1367 1306 5.82      
4 A1 1067 1020 2.06      
5 A1 1042 996 17.23      
6 A1 908 868 23.01      
7 A2 929 888 0.00      
8 A2 660 630 0.00      
9 B1 884 845 37.46      
10 B1 648 619 1.52      
11 B2 3297 3151 0.07      
12 B2 1626 1553 0.08      
13 B2 1226 1171 3.74      
14 B2 971 928 21.80      
15 B2 936 895 0.95      

Unscaled Zero Point Vibrational Energy (zpe) 10189.4 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 9736.0 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/cc-pVTZ
ABC
0.35260 0.32577 0.16933

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.124
N2 0.000 1.127 0.353
N3 0.000 -1.127 0.353
C4 0.000 0.712 -0.877
C5 0.000 -0.712 -0.877
H6 0.000 1.406 -1.699
H7 0.000 -1.406 -1.699

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36551.36552.12402.12403.15293.1529
N21.36552.25431.29832.21312.07023.2595
N31.36552.25432.21311.29833.25952.0702
C42.12401.29832.21311.42481.07472.2718
C52.12402.21311.29831.42482.27181.0747
H63.15292.07023.25951.07472.27182.8117
H73.15293.25952.07022.27181.07472.8117

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.734 O1 N3 C5 105.734
N2 O1 N3 111.273 N2 C4 C5 108.630
N2 C4 H6 121.189 N3 C5 C4 108.630
N3 C5 H7 121.189 C4 C5 H7 130.181
C5 C4 H6 130.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability