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: B3LYPultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-262.063609
Energy at 298.15K 
HF Energy-262.063609
Nuclear repulsion energy163.741965
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 B3LYPultrafine/6-31G(2df,p)
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 3283 3168 0.17 88.84 0.10 0.18
2 A1 1454 1403 10.41 17.06 0.31 0.48
3 A1 1349 1302 4.98 14.33 0.13 0.23
4 A1 1063 1026 2.44 4.94 0.48 0.65
5 A1 1048 1011 14.67 6.41 0.15 0.26
6 A1 914 882 20.20 5.85 0.10 0.18
7 A2 916 884 0.00 1.47 0.75 0.86
8 A2 664 641 0.00 0.33 0.75 0.86
9 B1 871 841 28.05 0.80 0.75 0.86
10 B1 657 634 1.83 0.50 0.75 0.86
11 B2 3269 3155 0.06 56.65 0.75 0.86
12 B2 1585 1530 0.16 0.07 0.75 0.86
13 B2 1205 1163 4.35 0.91 0.75 0.86
14 B2 972 938 22.83 4.52 0.75 0.86
15 B2 886 855 5.17 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10068.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9716.1 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 B3LYPultrafine/6-31G(2df,p)
ABC
0.35107 0.32575 0.16897

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.123
N2 0.000 1.129 0.356
N3 0.000 -1.129 0.356
C4 0.000 0.710 -0.880
C5 0.000 -0.710 -0.880
H6 0.000 1.406 -1.704
H7 0.000 -1.406 -1.704

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36481.36482.12572.12573.15793.1579
N21.36482.25711.30502.21542.07883.2660
N31.36482.25712.21541.30503.26602.0788
C42.12571.30502.21541.42001.07852.2706
C52.12572.21541.30501.42002.27061.0785
H63.15792.07883.26601.07852.27062.8113
H73.15793.26602.07882.27061.07852.8113

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.515 O1 N3 C5 105.515
N2 O1 N3 111.558 N2 C4 C5 108.706
N2 C4 H6 121.128 N3 C5 C4 108.706
N3 C5 H7 121.128 C4 C5 H7 130.166
C5 C4 H6 130.166
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.138      
2 N -0.058      
3 N -0.058      
4 C -0.028      
5 C -0.028      
6 H 0.155      
7 H 0.155      


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 -3.213 3.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.854 0.000 0.000
y 0.000 -29.363 0.000
z 0.000 0.000 -24.884
Traceless
 xyz
x -0.731 0.000 0.000
y 0.000 -2.994 0.000
z 0.000 0.000 3.724
Polar
3z2-r27.448
x2-y21.509
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.747 0.000 0.000
y 0.000 5.788 0.000
z 0.000 0.000 5.818


<r2> (average value of r2) Å2
<r2> 71.900
(<r2>)1/2 8.479