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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CCSD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-261.354534
Energy at 298.15K 
HF Energy-260.552081
Nuclear repulsion energy162.903450
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/6-31+G**
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 3357 3135 0.60      
2 A1 1516 1416 16.33      
3 A1 1376 1285 3.80      
4 A1 1081 1009 0.48      
5 A1 1034 966 20.41      
6 A1 906 846 26.05      
7 A2 863 806 0.00      
8 A2 633 591 0.00      
9 B1 863 806 43.73      
10 B1 626 585 0.81      
11 B2 3343 3122 0.09      
12 B2 1635 1526 0.07      
13 B2 1239 1157 3.97      
14 B2 972 908 17.53      
15 B2 936 874 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10189.3 cm-1
Scaled (by 0.9338) Zero Point Vibrational Energy (zpe) 9514.8 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/6-31+G**
ABC
0.34842 0.32146 0.16720

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.131
N2 0.000 1.137 0.354
N3 0.000 -1.137 0.354
C4 0.000 0.714 -0.883
C5 0.000 -0.714 -0.883
H6 0.000 1.407 -1.707
H7 0.000 -1.407 -1.707

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37741.37742.13692.13693.16743.1674
N21.37742.27391.30672.22632.07793.2735
N31.37742.27392.22631.30673.27352.0779
C42.13691.30672.22631.42871.07622.2755
C52.13692.22631.30671.42872.27551.0762
H63.16742.07793.27351.07622.27552.8135
H73.16743.27352.07792.27551.07622.8135

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.496 O1 N3 C5 105.496
N2 O1 N3 111.267 N2 C4 C5 108.870
N2 C4 H6 121.087 N3 C5 C4 108.870
N3 C5 H7 121.087 C4 C5 H7 130.043
C5 C4 H6 130.043
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability