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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-261.485805
Energy at 298.15K 
HF Energy-260.568521
Nuclear repulsion energy163.840338
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/6-31G(2df,p)
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 3332 3157 0.79      
2 A1 1503 1424 11.85      
3 A1 1369 1297 7.07      
4 A1 1073 1016 2.49      
5 A1 1050 995 15.46      
6 A1 916 868 20.54      
7 A2 926 877 0.00      
8 A2 658 623 0.00      
9 B1 886 840 30.48      
10 B1 650 616 1.46      
11 B2 3317 3143 0.25      
12 B2 1625 1539 0.25      
13 B2 1228 1164 3.98      
14 B2 971 920 20.06      
15 B2 952 902 4.12      

Unscaled Zero Point Vibrational Energy (zpe) 10228.4 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 9690.4 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 QCISD/6-31G(2df,p)
ABC
0.35181 0.32566 0.16912

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.123
N2 0.000 1.127 0.355
N3 0.000 -1.127 0.355
C4 0.000 0.713 -0.879
C5 0.000 -0.713 -0.879
H6 0.000 1.409 -1.701
H7 0.000 -1.409 -1.701

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36391.36392.12542.12543.15593.1559
N21.36392.25381.30162.21532.07483.2645
N31.36392.25382.21531.30163.26452.0748
C42.12541.30162.21531.42581.07702.2757
C52.12542.21531.30161.42582.27571.0770
H63.15592.07483.26451.07702.27572.8187
H73.15593.26452.07482.27571.07702.8187

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.738 O1 N3 C5 105.738
N2 O1 N3 111.431 N2 C4 C5 108.547
N2 C4 H6 121.160 N3 C5 C4 108.547
N3 C5 H7 121.160 C4 C5 H7 130.293
C5 C4 H6 130.293
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability