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: TPSSh/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-311+G(3df,2p)
 hartrees
Energy at 0K-262.152474
Energy at 298.15K 
HF Energy-262.152474
Nuclear repulsion energy163.701969
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 TPSSh/6-311+G(3df,2p)
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 3264 3264 0.15 108.20 0.09 0.16
2 A1 1449 1449 14.69 16.99 0.29 0.45
3 A1 1339 1339 2.82 25.69 0.03 0.06
4 A1 1063 1063 1.68 4.48 0.24 0.39
5 A1 1031 1031 18.07 8.58 0.11 0.20
6 A1 895 895 19.86 5.73 0.11 0.19
7 A2 913 913 0.00 0.08 0.75 0.86
8 A2 655 655 0.00 0.10 0.75 0.86
9 B1 865 865 40.74 0.05 0.75 0.86
10 B1 650 650 1.54 0.24 0.75 0.86
11 B2 3249 3249 0.05 60.98 0.75 0.86
12 B2 1571 1571 0.01 0.05 0.75 0.86
13 B2 1201 1201 4.09 0.60 0.75 0.86
14 B2 961 961 19.53 2.73 0.75 0.86
15 B2 850 850 4.61 0.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9976.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9976.7 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 TPSSh/6-311+G(3df,2p)
ABC
0.35141 0.32524 0.16891

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.124
N2 0.000 1.131 0.355
N3 0.000 -1.131 0.355
C4 0.000 0.708 -0.879
C5 0.000 -0.708 -0.879
H6 0.000 1.404 -1.702
H7 0.000 -1.404 -1.702

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36791.36792.12512.12513.15593.1559
N21.36792.26171.30432.21472.07483.2645
N31.36792.26172.21471.30433.26452.0748
C42.12511.30432.21471.41661.07762.2671
C52.12512.21471.30431.41662.26711.0776
H63.15592.07483.26451.07762.26712.8084
H73.15593.26452.07482.26711.07762.8084

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.333 O1 N3 C5 105.333
N2 O1 N3 111.525 N2 C4 C5 108.905
N2 C4 H6 120.870 N3 C5 C4 108.905
N3 C5 H7 120.870 C4 C5 H7 130.225
C5 C4 H6 130.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.256      
2 N -0.491      
3 N -0.491      
4 C 0.491      
5 C 0.491      
6 H 0.128      
7 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.330 3.330
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.921 0.000 0.000
y 0.000 6.792 0.000
z 0.000 0.000 6.634


<r2> (average value of r2) Å2
<r2> 72.256
(<r2>)1/2 8.500