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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/aug-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 QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-261.610834
Energy at 298.15K 
HF Energy-260.640325
Nuclear repulsion energy163.845884
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/aug-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 3307 3183 0.64      
2 A1 1503 1447 15.07      
3 A1 1364 1313 5.82      
4 A1 1064 1024 2.00      
5 A1 1037 998 17.34      
6 A1 902 868 23.70      
7 A2 914 879 0.00      
8 A2 654 630 0.00      
9 B1 880 847 37.27      
10 B1 644 620 1.63      
11 B2 3292 3168 0.19      
12 B2 1622 1561 0.01      
13 B2 1220 1174 3.20      
14 B2 971 935 21.02      
15 B2 928 893 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 10151.0 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 9769.3 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/aug-cc-pVTZ
ABC
0.35223 0.32532 0.16912

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.125
N2 0.000 1.128 0.352
N3 0.000 -1.128 0.352
C4 0.000 0.713 -0.878
C5 0.000 -0.713 -0.878
H6 0.000 1.407 -1.699
H7 0.000 -1.407 -1.699

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36721.36722.12572.12573.15483.1548
N21.36722.25601.29822.21392.06993.2609
N31.36722.25602.21391.29823.26092.0699
C42.12571.29822.21391.42561.07532.2734
C52.12572.21391.29821.42562.27341.0753
H63.15482.06993.26091.07532.27342.8142
H73.15483.26092.06992.27341.07532.8142

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.758 O1 N3 C5 105.758
N2 O1 N3 111.181 N2 C4 C5 108.652
N2 C4 H6 121.130 N3 C5 C4 108.652
N3 C5 H7 121.130 C4 C5 H7 130.219
C5 C4 H6 130.219
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability