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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: HSEh1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-258.437842
Energy at 298.15K 
HF Energy-258.437842
Nuclear repulsion energy158.298130
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 HSEh1PBE/STO-3G
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 3561 3145 42.79 48.75 0.12 0.22
2 A1 1476 1304 29.21 12.84 0.68 0.81
3 A1 1357 1199 0.00 10.81 0.09 0.16
4 A1 1126 995 0.40 8.25 0.21 0.34
5 A1 1091 964 4.29 8.71 0.42 0.59
6 A1 941 831 2.21 1.30 0.16 0.27
7 A2 923 815 0.00 1.78 0.75 0.86
8 A2 650 574 0.00 0.40 0.75 0.86
9 B1 864 763 21.88 1.21 0.75 0.86
10 B1 599 529 1.16 0.25 0.75 0.86
11 B2 3540 3126 16.69 37.00 0.75 0.86
12 B2 1601 1414 14.60 0.00 0.75 0.86
13 B2 1235 1091 3.64 0.70 0.75 0.86
14 B2 1063 938 0.99 0.01 0.75 0.86
15 B2 968 854 10.25 5.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10497.7 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 9270.5 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 HSEh1PBE/STO-3G
ABC
0.32721 0.30592 0.15810

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.166
N2 0.000 1.179 0.367
N3 0.000 -1.179 0.367
C4 0.000 0.713 -0.911
C5 0.000 -0.713 -0.911
H6 0.000 1.401 -1.762
H7 0.000 -1.401 -1.762

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.42461.42462.19612.19613.24593.2459
N21.42462.35851.36032.28342.14033.3450
N31.42462.35852.28341.36033.34502.1403
C42.19611.36032.28341.42611.09412.2787
C52.19612.28341.36031.42612.27871.0941
H63.24592.14033.34501.09412.27872.8018
H73.24593.34502.14032.27871.09412.8018

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.083 O1 N3 C5 104.083
N2 O1 N3 111.748 N2 C4 C5 110.043
N2 C4 H6 121.006 N3 C5 C4 110.043
N3 C5 H7 121.006 C4 C5 H7 128.951
C5 C4 H6 128.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.011      
2 N -0.092      
3 N -0.092      
4 C -0.038      
5 C -0.038      
6 H 0.124      
7 H 0.124      


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 -2.518 2.518
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.634 0.000 0.000
y 0.000 -28.302 0.000
z 0.000 0.000 -23.998
Traceless
 xyz
x 0.516 0.000 0.000
y 0.000 -3.487 0.000
z 0.000 0.000 2.970
Polar
3z2-r25.941
x2-y22.669
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.849 0.000 0.000
y 0.000 3.594 0.000
z 0.000 0.000 3.706


<r2> (average value of r2) Å2
<r2> 74.651
(<r2>)1/2 8.640