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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD(T)/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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-261.361373
Energy at 298.15K 
HF Energy-260.537720
Nuclear repulsion energy161.960973
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(T)/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 3293 3159        
2 A1 1476 1415        
3 A1 1346 1291        
4 A1 1075 1031        
5 A1 1006 965        
6 A1 881 845        
7 A2 834 800        
8 A2 629 603        
9 B1 836 802        
10 B1 626 600        
11 B2 3280 3147        
12 B2 1585 1520        
13 B2 1211 1162        
14 B2 958 919        
15 B2 861 826        

Unscaled Zero Point Vibrational Energy (zpe) 9947.6 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 9542.7 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(T)/6-31G*
ABC
0.34471 0.31777 0.16535

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.138
N2 0.000 1.147 0.355
N3 0.000 -1.147 0.355
C4 0.000 0.714 -0.887
C5 0.000 -0.714 -0.887
H6 0.000 1.409 -1.718
H7 0.000 -1.409 -1.718

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.38851.38852.14692.14693.18493.1849
N21.38852.29331.31512.23672.08983.2908
N31.38852.29332.23671.31513.29082.0898
C42.14691.31512.23671.42751.08382.2798
C52.14692.23671.31511.42752.27981.0838
H63.18492.08983.29081.08382.27982.8180
H73.18493.29082.08982.27981.08382.8180

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.110 O1 N3 C5 105.110
N2 O1 N3 111.343 N2 C4 C5 109.219
N2 C4 H6 120.878 N3 C5 C4 109.219
N3 C5 H7 120.878 C4 C5 H7 129.903
C5 C4 H6 129.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability