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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-261.432907
Energy at 298.15K 
HF Energy-260.641232
Nuclear repulsion energy166.267870
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/cc-pVTZ
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 3411 3172 0.60      
2 A1 1572 1462 13.38      
3 A1 1433 1333 4.96      
4 A1 1126 1047 36.10      
5 A1 1103 1026 1.53      
6 A1 981 912 23.77      
7 A2 990 921 0.00      
8 A2 696 647 0.00      
9 B1 935 869 37.55      
10 B1 690 642 1.85      
11 B2 3397 3158 0.09      
12 B2 1712 1592 0.06      
13 B2 1285 1195 3.20      
14 B2 1073 998 0.72      
15 B2 1017 945 25.58      

Unscaled Zero Point Vibrational Energy (zpe) 10710.5 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 9958.6 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 CISD/cc-pVTZ
ABC
0.36141 0.33587 0.17408

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.105
N2 0.000 1.105 0.353
N3 0.000 -1.105 0.353
C4 0.000 0.708 -0.868
C5 0.000 -0.708 -0.868
H6 0.000 1.401 -1.680
H7 0.000 -1.401 -1.680

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.33661.33662.09642.09643.11713.1171
N21.33662.21041.28452.18622.05433.2268
N31.33662.21042.18621.28453.22682.0543
C42.09641.28452.18621.41591.06692.2594
C52.09642.18621.28451.41592.25941.0669
H63.11712.05433.22681.06692.25942.8015
H73.11713.22682.05432.25941.06692.8015

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 106.207 O1 N3 C5 106.207
N2 O1 N3 111.556 N2 C4 C5 108.015
N2 C4 H6 121.492 N3 C5 C4 108.015
N3 C5 H7 121.492 C4 C5 H7 130.493
C5 C4 H6 130.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability