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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-261.313259
Energy at 298.15K 
HF Energy-260.542676
Nuclear repulsion energy163.519038
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 MP3/6-31G*
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 3350 3144 0.88      
2 A1 1527 1434 14.29      
3 A1 1391 1306 3.89      
4 A1 1094 1027 1.08      
5 A1 1060 995 23.08      
6 A1 936 879 23.75      
7 A2 866 813 0.00      
8 A2 651 611 0.00      
9 B1 866 813 39.28      
10 B1 647 607 0.53      
11 B2 3336 3131 0.04      
12 B2 1651 1549 0.63      
13 B2 1249 1173 5.17      
14 B2 1016 954 4.61      
15 B2 986 925 15.68      

Unscaled Zero Point Vibrational Energy (zpe) 10313.4 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 9680.2 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 MP3/6-31G*
ABC
0.35035 0.32461 0.16849

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.125
N2 0.000 1.130 0.356
N3 0.000 -1.130 0.356
C4 0.000 0.712 -0.881
C5 0.000 -0.712 -0.881
H6 0.000 1.409 -1.705
H7 0.000 -1.409 -1.705

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36691.36692.12852.12853.16163.1616
N21.36692.26021.30582.21882.08003.2705
N31.36692.26022.21881.30583.27052.0800
C42.12851.30582.21881.42371.07962.2755
C52.12852.21881.30581.42372.27551.0796
H63.16162.08003.27051.07962.27552.8183
H73.16163.27052.08002.27551.07962.8183

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.552 O1 N3 C5 105.552
N2 O1 N3 111.532 N2 C4 C5 108.682
N2 C4 H6 121.087 N3 C5 C4 108.682
N3 C5 H7 121.087 C4 C5 H7 130.231
C5 C4 H6 130.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability