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: MP4/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/cc-pVTZ
 hartrees
Energy at 0K-261.655494
Energy at 298.15K 
HF Energy-260.631226
Nuclear repulsion energy162.475522
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/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 3284 3183        
2 A1 1419 1375        
3 A1 1303 1263        
4 A1 1061 1028        
5 A1 1004 973        
6 A1 874 847        
7 A2 885 858        
8 A2 642 622        
9 B1 846 820        
10 B1 644 624        
11 B2 3268 3167        
12 B2 1515 1469        
13 B2 1178 1142        
14 B2 945 916        
15 B2 841 815        

Unscaled Zero Point Vibrational Energy (zpe) 9854.7 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 9551.2 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 MP4/cc-pVTZ
ABC
0.34564 0.32101 0.16643

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.133
N2 0.000 1.142 0.358
N3 0.000 -1.142 0.358
C4 0.000 0.708 -0.888
C5 0.000 -0.708 -0.888
H6 0.000 1.404 -1.710
H7 0.000 -1.404 -1.710

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.38021.38022.14152.14153.17123.1712
N21.38022.28341.31882.23012.08463.2798
N31.38022.28342.23011.31883.27982.0846
C42.14151.31882.23011.41641.07732.2666
C52.14152.23011.31881.41642.26661.0773
H63.17122.08463.27981.07732.26662.8079
H73.17123.27982.08462.26661.07732.8079

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.997 O1 N3 C5 104.997
N2 O1 N3 111.627 N2 C4 C5 109.190
N2 C4 H6 120.583 N3 C5 C4 109.190
N3 C5 H7 120.583 C4 C5 H7 130.227
C5 C4 H6 130.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability