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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G
 hartrees
Energy at 0K-260.291724
Energy at 298.15K 
HF Energy-260.291724
Nuclear repulsion energy159.367844
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 PBE1PBE/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 3334 3202 6.21 82.42 0.10 0.18
2 A1 1399 1343 15.39 16.45 0.45 0.63
3 A1 1313 1261 4.92 12.57 0.21 0.34
4 A1 1061 1019 0.03 5.04 0.27 0.42
5 A1 977 939 3.74 5.22 0.45 0.62
6 A1 864 830 11.07 9.46 0.12 0.22
7 A2 958 920 0.00 2.30 0.75 0.86
8 A2 661 635 0.00 0.38 0.75 0.86
9 B1 891 855 57.65 0.99 0.75 0.86
10 B1 598 575 0.66 0.73 0.75 0.86
11 B2 3318 3186 0.27 52.05 0.75 0.86
12 B2 1534 1473 5.90 0.14 0.75 0.86
13 B2 1212 1164 12.11 0.79 0.75 0.86
14 B2 974 936 13.68 5.34 0.75 0.86
15 B2 793 762 0.79 0.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9943.3 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 9549.6 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 PBE1PBE/3-21G
ABC
0.33585 0.30573 0.16004

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.174
N2 0.000 1.182 0.339
N3 0.000 -1.182 0.339
C4 0.000 0.714 -0.889
C5 0.000 -0.714 -0.889
H6 0.000 1.374 -1.739
H7 0.000 -1.374 -1.739

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.44691.44692.18372.18373.22143.2214
N21.44692.36321.31462.25892.08763.2942
N31.44692.36322.25891.31463.29422.0876
C42.18371.31462.25891.42791.07622.2543
C52.18372.25891.31461.42792.25431.0762
H63.22142.08763.29421.07622.25432.7478
H73.22143.29422.08762.25431.07622.7478

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.411 O1 N3 C5 104.411
N2 O1 N3 109.503 N2 C4 C5 110.837
N2 C4 H6 121.341 N3 C5 C4 110.837
N3 C5 H7 121.341 C4 C5 H7 127.822
C5 C4 H6 127.822
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.193      
2 N -0.183      
3 N -0.183      
4 C -0.010      
5 C -0.010      
6 H 0.290      
7 H 0.290      


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 -3.832 3.832
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.697 0.000 0.000
y 0.000 -29.922 0.000
z 0.000 0.000 -25.503
Traceless
 xyz
x -0.984 0.000 0.000
y 0.000 -2.822 0.000
z 0.000 0.000 3.807
Polar
3z2-r27.613
x2-y21.226
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.691 0.000 0.000
y 0.000 5.237 0.000
z 0.000 0.000 5.347


<r2> (average value of r2) Å2
<r2> 75.138
(<r2>)1/2 8.668