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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: MP4=FULL/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 MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-261.727786
Energy at 298.15K 
HF Energy-260.633343
Nuclear repulsion energy163.134916
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 MP4=FULL/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 3184        
2 A1 1436 1383        
3 A1 1318 1270        
4 A1 1072 1032        
5 A1 1014 976        
6 A1 883 850        
7 A2 914 880        
8 A2 651 627        
9 B1 866 834        
10 B1 651 627        
11 B2 3287 3165        
12 B2 1529 1473        
13 B2 1194 1149        
14 B2 953 918        
15 B2 850 819        

Unscaled Zero Point Vibrational Energy (zpe) 9962.1 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 9592.5 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 MP4=FULL/cc-pVTZ
ABC
0.34811 0.32389 0.16778

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.129
N2 0.000 1.137 0.356
N3 0.000 -1.137 0.356
C4 0.000 0.705 -0.884
C5 0.000 -0.705 -0.884
H6 0.000 1.395 -1.705
H7 0.000 -1.395 -1.705

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37471.37472.13382.13383.15903.1590
N21.37472.27331.31352.22092.07743.2645
N31.37472.27332.22091.31353.26452.0774
C42.13381.31352.22091.41081.07172.2547
C52.13382.22091.31351.41082.25471.0717
H63.15902.07743.26451.07172.25472.7893
H73.15903.26452.07742.25471.07172.7893

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.056 O1 N3 C5 105.056
N2 O1 N3 111.552 N2 C4 C5 109.168
N2 C4 H6 120.805 N3 C5 C4 109.168
N3 C5 H7 120.805 C4 C5 H7 130.026
C5 C4 H6 130.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability