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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/3-21G
 hartrees
Energy at 0K-259.537390
Energy at 298.15K 
HF Energy-259.064336
Nuclear repulsion energy159.177246
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 CISD/3-21G
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 3380 3182 4.42      
2 A1 1453 1368 9.45      
3 A1 1357 1277 7.89      
4 A1 1052 990 0.40      
5 A1 982 925 2.99      
6 A1 860 809 16.35      
7 A2 964 907 0.00      
8 A2 669 630 0.00      
9 B1 919 865 47.27      
10 B1 592 557 0.58      
11 B2 3364 3166 0.02      
12 B2 1602 1508 6.20      
13 B2 1269 1194 10.41      
14 B2 1002 944 13.89      
15 B2 873 822 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 10168.2 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 9571.4 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 CISD/3-21G
ABC
0.33574 0.30380 0.15949

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.181
N2 0.000 1.182 0.333
N3 0.000 -1.182 0.333
C4 0.000 0.722 -0.887
C5 0.000 -0.722 -0.887
H6 0.000 1.378 -1.736
H7 0.000 -1.378 -1.736

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.45511.45512.19062.19063.22593.2259
N21.45512.36481.30412.26172.07803.2915
N31.45512.36482.26171.30413.29152.0780
C42.19061.30412.26171.44391.07252.2647
C52.19062.26171.30411.44392.26471.0725
H63.22592.07803.29151.07252.26472.7553
H73.22593.29152.07802.26471.07252.7553

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.977 O1 N3 C5 104.977
N2 O1 N3 108.696 N2 C4 C5 110.675
N2 C4 H6 121.638 N3 C5 C4 110.675
N3 C5 H7 121.638 C4 C5 H7 127.687
C5 C4 H6 127.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability