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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-259.624333
Energy at 298.15K 
HF Energy-259.057170
Nuclear repulsion energy156.634963
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/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 3272 3145 2.33      
2 A1 1379 1325 13.34      
3 A1 1295 1244 5.59      
4 A1 1014 974 0.55      
5 A1 915 879 0.48      
6 A1 786 756 5.96      
7 A2 891 857 0.00      
8 A2 629 604 0.00      
9 B1 862 828 45.33      
10 B1 554 532 0.57      
11 B2 3256 3129 0.15      
12 B2 1509 1451 6.62      
13 B2 1218 1170 9.46      
14 B2 949 912 12.32      
15 B2 766 736 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 9646.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 9271.3 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/3-21G*
ABC
0.32594 0.29334 0.15439

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.206
N2 0.000 1.209 0.331
N3 0.000 -1.209 0.331
C4 0.000 0.726 -0.897
C5 0.000 -0.726 -0.897
H6 0.000 1.381 -1.758
H7 0.000 -1.381 -1.758

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.49291.49292.22542.22543.26963.2696
N21.49292.41891.32002.29262.09563.3273
N31.49292.41892.29261.32003.32732.0956
C42.22541.32002.29261.45251.08092.2758
C52.22542.29261.32001.45252.27581.0809
H63.26962.09563.32731.08092.27582.7615
H73.26963.32732.09562.27581.08092.7615

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.418 O1 N3 C5 104.418
N2 O1 N3 108.220 N2 C4 C5 111.472
N2 C4 H6 121.263 N3 C5 C4 111.472
N3 C5 H7 121.263 C4 C5 H7 127.265
C5 C4 H6 127.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability