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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CCSD(T)/aug-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 CCSD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-261.446682
Energy at 298.15K 
HF Energy-260.576345
Nuclear repulsion energy161.423544
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 CCSD(T)/aug-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 3282 3159        
2 A1 1449 1395        
3 A1 1317 1268        
4 A1 1047 1008        
5 A1 996 959        
6 A1 863 830        
7 A2 838 806        
8 A2 625 601        
9 B1 832 801        
10 B1 620 597        
11 B2 3266 3144        
12 B2 1549 1491        
13 B2 1174 1130        
14 B2 943 907        
15 B2 830 799        

Unscaled Zero Point Vibrational Energy (zpe) 9815.1 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 9447.0 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 CCSD(T)/aug-cc-pVDZ
ABC
0.34201 0.31591 0.16422

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.140
N2 0.000 1.148 0.359
N3 0.000 -1.148 0.359
C4 0.000 0.719 -0.891
C5 0.000 -0.719 -0.891
H6 0.000 1.423 -1.723
H7 0.000 -1.423 -1.723

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.38841.38842.15502.15503.19773.1977
N21.38842.29511.32162.24642.10033.3079
N31.38842.29512.24641.32163.30792.1003
C42.15501.32162.24641.43761.09002.2976
C52.15502.24641.32161.43762.29761.0900
H63.19772.10033.30791.09002.29762.8457
H73.19773.30792.10032.29761.09002.8457

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.324 O1 N3 C5 105.324
N2 O1 N3 111.491 N2 C4 C5 108.931
N2 C4 H6 120.834 N3 C5 C4 108.931
N3 C5 H7 120.834 C4 C5 H7 130.236
C5 C4 H6 130.236
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability