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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-261.412744
Energy at 298.15K 
HF Energy-260.581003
Nuclear repulsion energy162.213237
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/daug-cc-pVDZ
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 3301 3301 0.38      
2 A1 1496 1496 16.14      
3 A1 1346 1346 5.55      
4 A1 1054 1054 1.37      
5 A1 1016 1016 15.01      
6 A1 879 879 23.94      
7 A2 910 910 0.00      
8 A2 641 641 0.00      
9 B1 861 861 37.74      
10 B1 626 626 1.42      
11 B2 3287 3287 0.06      
12 B2 1604 1604 0.00      
13 B2 1200 1200 3.35      
14 B2 956 956 20.20      
15 B2 891 891 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 10033.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10033.9 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/daug-cc-pVDZ
ABC
0.34578 0.31844 0.16577

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.135
N2 0.000 1.141 0.356
N3 0.000 -1.141 0.356
C4 0.000 0.720 -0.886
C5 0.000 -0.720 -0.886
H6 0.000 1.421 -1.717
H7 0.000 -1.421 -1.717

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.38101.38102.14492.14493.18613.1861
N21.38102.28101.31122.23682.09183.2954
N31.38102.28102.23681.31123.29542.0918
C42.14491.31122.23681.43971.08742.2968
C52.14492.23681.31121.43972.29681.0874
H63.18612.09183.29541.08742.29682.8426
H73.18613.29542.09182.29681.08742.8426

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.610 O1 N3 C5 105.610
N2 O1 N3 111.356 N2 C4 C5 108.712
N2 C4 H6 121.122 N3 C5 C4 108.712
N3 C5 H7 121.122 C4 C5 H7 130.166
C5 C4 H6 130.166
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability