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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: PBE1PBE/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 PBE1PBE/STO-3G
 hartrees
Energy at 0K-258.418032
Energy at 298.15K 
HF Energy-258.418032
Nuclear repulsion energy158.410752
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/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 3565 3144 43.93 48.30 0.12 0.22
2 A1 1479 1305 29.37 12.82 0.68 0.81
3 A1 1362 1201 0.00 10.67 0.09 0.16
4 A1 1129 996 0.53 8.39 0.19 0.32
5 A1 1095 966 4.30 8.61 0.45 0.62
6 A1 943 832 2.23 1.26 0.16 0.27
7 A2 925 816 0.00 1.78 0.75 0.86
8 A2 651 575 0.00 0.40 0.75 0.86
9 B1 865 763 22.04 1.21 0.75 0.86
10 B1 601 530 1.16 0.25 0.75 0.86
11 B2 3543 3125 17.28 36.64 0.75 0.86
12 B2 1605 1416 14.58 0.00 0.75 0.86
13 B2 1238 1092 3.68 0.70 0.75 0.86
14 B2 1069 943 1.05 0.01 0.75 0.86
15 B2 969 855 10.32 5.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10518.9 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 9278.7 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 PBE1PBE/STO-3G
ABC
0.32762 0.30641 0.15833

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.165
N2 0.000 1.178 0.367
N3 0.000 -1.178 0.367
C4 0.000 0.713 -0.911
C5 0.000 -0.713 -0.911
H6 0.000 1.401 -1.761
H7 0.000 -1.401 -1.761

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.42301.42302.19462.19463.24413.2441
N21.42302.35621.35952.28192.13953.3434
N31.42302.35622.28191.35953.34342.1395
C42.19461.35952.28191.42561.09392.2782
C52.19462.28191.35951.42562.27821.0939
H63.24412.13953.34341.09392.27822.8015
H73.24413.34342.13952.27821.09392.8015

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.105 O1 N3 C5 104.105
N2 O1 N3 111.760 N2 C4 C5 110.014
N2 C4 H6 121.015 N3 C5 C4 110.014
N3 C5 H7 121.015 C4 C5 H7 128.971
C5 C4 H6 128.971
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/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 0.125      
7 H 0.125      


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 -2.522 2.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.632 0.000 0.000
y 0.000 -28.304 0.000
z 0.000 0.000 -23.991
Traceless
 xyz
x 0.516 0.000 0.000
y 0.000 -3.493 0.000
z 0.000 0.000 2.977
Polar
3z2-r25.954
x2-y22.673
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.848 0.000 0.000
y 0.000 3.582 0.000
z 0.000 0.000 3.696


<r2> (average value of r2) Å2
<r2> 74.570
(<r2>)1/2 8.635