return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: MP3/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 MP3/cc-pVDZ
 hartrees
Energy at 0K-261.345786
Energy at 298.15K 
HF Energy-260.564675
Nuclear repulsion energy163.502616
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 MP3/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 3346 3172 1.12      
2 A1 1512 1433 15.08      
3 A1 1375 1304 3.00      
4 A1 1076 1020 15.58      
5 A1 1062 1006 8.82      
6 A1 936 887 24.02      
7 A2 903 856 0.00      
8 A2 656 622 0.00      
9 B1 872 827 34.72      
10 B1 655 621 0.65      
11 B2 3331 3157 0.12      
12 B2 1631 1546 0.13      
13 B2 1221 1158 3.87      
14 B2 1011 958 2.81      
15 B2 982 931 18.34      

Unscaled Zero Point Vibrational Energy (zpe) 10284.0 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9748.2 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 MP3/cc-pVDZ
ABC
0.34971 0.32483 0.16840

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.120
N2 0.000 1.126 0.362
N3 0.000 -1.126 0.362
C4 0.000 0.716 -0.884
C5 0.000 -0.716 -0.884
H6 0.000 1.424 -1.709
H7 0.000 -1.424 -1.709

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.35761.35762.12812.12813.16763.1676
N21.35762.25171.31102.22362.09233.2847
N31.35762.25172.22361.31103.28472.0923
C42.12811.31102.22361.43251.08732.2937
C52.12812.22361.31101.43252.29371.0873
H63.16762.09233.28471.08732.29372.8475
H73.16763.28472.09232.29371.08732.8475

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.767 O1 N3 C5 105.767
N2 O1 N3 112.053 N2 C4 C5 108.207
N2 C4 H6 121.198 N3 C5 C4 108.207
N3 C5 H7 121.198 C4 C5 H7 130.595
C5 C4 H6 130.595
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability