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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/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/6-31G*
 hartrees
Energy at 0K-261.327725
Energy at 298.15K 
HF Energy-260.540676
Nuclear repulsion energy162.698905
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*
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 3314 3156 0.33      
2 A1 1520 1448 12.77      
3 A1 1373 1307 6.56      
4 A1 1080 1029 0.49      
5 A1 1026 977 14.75      
6 A1 898 855 23.82      
7 A2 867 825 0.00      
8 A2 643 612 0.00      
9 B1 860 819 37.69      
10 B1 633 603 0.67      
11 B2 3300 3143 0.00      
12 B2 1636 1558 0.41      
13 B2 1232 1174 5.35      
14 B2 971 924 20.40      
15 B2 921 877 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 10136.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9652.6 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*
ABC
0.34800 0.32038 0.16681

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.133
N2 0.000 1.139 0.353
N3 0.000 -1.139 0.353
C4 0.000 0.714 -0.882
C5 0.000 -0.714 -0.882
H6 0.000 1.409 -1.712
H7 0.000 -1.409 -1.712

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.38101.38102.13812.13813.17493.1749
N21.38102.27901.30612.22762.08243.2801
N31.38102.27902.22761.30613.28012.0824
C42.13811.30612.22761.42891.08222.2800
C52.13812.22761.30611.42892.28001.0822
H63.17492.08243.28011.08222.28002.8184
H73.17493.28012.08242.28001.08222.8184

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.408 O1 N3 C5 105.408
N2 O1 N3 111.203 N2 C4 C5 108.990
N2 C4 H6 121.074 N3 C5 C4 108.990
N3 C5 H7 121.074 C4 C5 H7 129.936
C5 C4 H6 129.936
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability