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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: TPSSh/3-21G

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/3-21G
 hartrees
Energy at 0K-260.603185
Energy at 298.15K 
HF Energy-260.603185
Nuclear repulsion energy157.877987
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/3-21G
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 3300 3197 2.71 91.80 0.10 0.19
2 A1 1362 1319 18.40 14.38 0.62 0.76
3 A1 1273 1233 1.01 14.14 0.15 0.26
4 A1 1047 1015 0.01 5.71 0.25 0.40
5 A1 941 912 3.38 5.30 0.44 0.61
6 A1 833 807 7.83 9.84 0.13 0.22
7 A2 931 902 0.00 2.30 0.75 0.86
8 A2 643 623 0.00 0.40 0.75 0.86
9 B1 873 846 57.11 1.16 0.75 0.86
10 B1 578 560 0.60 0.68 0.75 0.86
11 B2 3282 3180 0.02 59.19 0.75 0.86
12 B2 1484 1438 6.02 0.07 0.75 0.86
13 B2 1193 1155 9.96 0.88 0.75 0.86
14 B2 948 919 13.62 5.33 0.75 0.86
15 B2 738 715 0.93 0.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9712.6 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 9409.5 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 TPSSh/3-21G
ABC
0.33054 0.29917 0.15703

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.188
N2 0.000 1.199 0.338
N3 0.000 -1.199 0.338
C4 0.000 0.715 -0.895
C5 0.000 -0.715 -0.895
H6 0.000 1.373 -1.749
H7 0.000 -1.373 -1.749

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.46941.46942.20252.20253.24143.2414
N21.46942.39811.32512.27762.09423.3122
N31.46942.39812.27761.32513.31222.0942
C42.20251.32512.27761.43101.07722.2560
C52.20252.27761.32511.43102.25601.0772
H63.24142.09423.31221.07722.25602.7460
H73.24143.31222.09422.25601.07722.7460

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 103.909 O1 N3 C5 103.909
N2 O1 N3 109.377 N2 C4 C5 111.402
N2 C4 H6 120.979 N3 C5 C4 111.402
N3 C5 H7 120.979 C4 C5 H7 127.618
C5 C4 H6 127.618
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.177      
2 N -0.186      
3 N -0.186      
4 C -0.003      
5 C -0.003      
6 H 0.277      
7 H 0.277      


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 -3.752 3.752
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 1.690 0.000 0.000
y 0.000 5.442 0.000
z 0.000 0.000 5.474


<r2> (average value of r2) Å2
<r2> 76.140
(<r2>)1/2 8.726