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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: HSEh1PBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-261.794263
Energy at 298.15K 
HF Energy-261.794263
Nuclear repulsion energy164.319278
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/6-31+G**
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 3317 3167 1.34 102.98 0.10 0.19
2 A1 1493 1425 12.83 22.01 0.26 0.41
3 A1 1370 1308 3.56 20.16 0.06 0.11
4 A1 1077 1028 15.50 3.67 0.71 0.83
5 A1 1072 1024 11.59 10.09 0.07 0.13
6 A1 936 894 22.06 4.15 0.13 0.22
7 A2 908 867 0.00 0.29 0.75 0.86
8 A2 661 631 0.00 0.18 0.75 0.86
9 B1 864 825 46.19 0.00 0.75 0.86
10 B1 663 633 1.13 0.49 0.75 0.86
11 B2 3303 3154 0.51 59.72 0.75 0.86
12 B2 1617 1544 0.00 0.13 0.75 0.86
13 B2 1209 1155 4.75 0.64 0.75 0.86
14 B2 977 932 14.37 3.92 0.75 0.86
15 B2 943 901 9.50 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10205.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9743.9 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/6-31+G**
ABC
0.35316 0.32834 0.17015

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.117
N2 0.000 1.122 0.358
N3 0.000 -1.122 0.358
C4 0.000 0.709 -0.879
C5 0.000 -0.709 -0.879
H6 0.000 1.409 -1.701
H7 0.000 -1.409 -1.701

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.35451.35452.11752.11753.15043.1504
N21.35452.24451.30402.20982.07903.2632
N31.35452.24452.20981.30403.26322.0790
C42.11751.30402.20981.41811.08002.2723
C52.11752.20981.30401.41812.27231.0800
H63.15042.07903.26321.08002.27232.8184
H73.15043.26322.07902.27231.08002.8184

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.578 O1 N3 C5 105.578
N2 O1 N3 111.893 N2 C4 C5 108.475
N2 C4 H6 121.114 N3 C5 C4 108.475
N3 C5 H7 121.114 C4 C5 H7 130.411
C5 C4 H6 130.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.188      
2 N -0.194      
3 N -0.194      
4 C -0.098      
5 C -0.098      
6 H 0.198      
7 H 0.198      


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 -3.466 3.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.713 0.000 0.000
y 0.000 -30.211 0.000
z 0.000 0.000 -25.430
Traceless
 xyz
x -0.893 0.000 0.000
y 0.000 -3.140 0.000
z 0.000 0.000 4.032
Polar
3z2-r28.065
x2-y21.498
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.500 0.000 0.000
y 0.000 6.400 0.000
z 0.000 0.000 6.310


<r2> (average value of r2) Å2
<r2> 72.020
(<r2>)1/2 8.486