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: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-261.427835
Energy at 298.15K 
HF Energy-260.599037
Nuclear repulsion energy163.237857
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 MP2/6-311G**
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 3324 3159 1.15 90.21 0.11 0.20
2 A1 1424 1353 26.81 8.10 0.73 0.85
3 A1 1297 1232 0.97 17.38 0.10 0.18
4 A1 1087 1032 0.60 7.14 0.37 0.54
5 A1 1052 1000 15.99 7.05 0.22 0.37
6 A1 924 878 13.28 4.41 0.15 0.26
7 A2 864 821 0.00 0.45 0.75 0.86
8 A2 640 608 0.00 0.38 0.75 0.86
9 B1 845 803 41.84 0.31 0.75 0.86
10 B1 665 632 1.24 0.20 0.75 0.86
11 B2 3309 3144 0.96 49.93 0.75 0.86
12 B2 1500 1426 0.35 1.00 0.75 0.86
13 B2 1186 1127 6.07 0.01 0.75 0.86
14 B2 975 926 13.28 2.38 0.75 0.86
15 B2 948 901 2.87 2.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10018.9 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 9520.0 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 MP2/6-311G**
ABC
0.34677 0.32593 0.16801

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.122
N2 0.000 1.131 0.366
N3 0.000 -1.131 0.366
C4 0.000 0.704 -0.891
C5 0.000 -0.704 -0.891
H6 0.000 1.411 -1.706
H7 0.000 -1.411 -1.706

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36021.36022.13182.13183.15983.1598
N21.36022.26191.32732.22392.09063.2791
N31.36022.26192.22391.32733.27912.0906
C42.13181.32732.22391.40761.07902.2662
C52.13182.22391.32731.40762.26621.0790
H63.15982.09063.27911.07902.26622.8215
H73.15983.27912.09062.26621.07902.8215

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.973 O1 N3 C5 104.973
N2 O1 N3 112.506 N2 C4 C5 108.774
N2 C4 H6 120.290 N3 C5 C4 108.774
N3 C5 H7 120.290 C4 C5 H7 130.935
C5 C4 H6 130.935
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability