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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD(T)/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(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-261.663695
Energy at 298.15K 
HF Energy-260.636911
Nuclear repulsion energy162.853486
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)/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 3281 3172        
2 A1 1451 1403        
3 A1 1329 1285        
4 A1 1052 1017        
5 A1 1010 976        
6 A1 876 847        
7 A2 880 851        
8 A2 639 617        
9 B1 854 825        
10 B1 633 612        
11 B2 3265 3157        
12 B2 1562 1510        
13 B2 1191 1152        
14 B2 953 921        
15 B2 857 829        

Unscaled Zero Point Vibrational Energy (zpe) 9915.4 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 9586.2 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)/aug-cc-pVTZ
ABC
0.34788 0.32170 0.16714

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.132
N2 0.000 1.137 0.354
N3 0.000 -1.137 0.354
C4 0.000 0.712 -0.884
C5 0.000 -0.712 -0.884
H6 0.000 1.408 -1.706
H7 0.000 -1.408 -1.706

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37781.37782.13782.13783.16833.1683
N21.37782.27481.30912.22582.07843.2750
N31.37782.27482.22581.30913.27502.0784
C42.13781.30912.22581.42451.07742.2743
C52.13782.22581.30911.42452.27431.0774
H63.16832.07843.27501.07742.27432.8161
H73.16833.27502.07842.27431.07742.8161

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.405 O1 N3 C5 105.405
N2 O1 N3 111.287 N2 C4 C5 108.952
N2 C4 H6 120.821 N3 C5 C4 108.952
N3 C5 H7 120.821 C4 C5 H7 130.227
C5 C4 H6 130.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability