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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: mPW1PW91/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 mPW1PW91/STO-3G
 hartrees
Energy at 0K-258.632902
Energy at 298.15K 
HF Energy-258.632902
Nuclear repulsion energy158.253048
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 mPW1PW91/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 3560 3129 43.29 48.94 0.12 0.22
2 A1 1475 1296 29.13 13.02 0.68 0.81
3 A1 1356 1192 0.00 10.91 0.09 0.16
4 A1 1125 989 0.43 8.09 0.21 0.34
5 A1 1091 959 4.39 8.76 0.41 0.58
6 A1 939 826 2.18 1.31 0.16 0.28
7 A2 923 811 0.00 1.81 0.75 0.86
8 A2 649 571 0.00 0.40 0.75 0.86
9 B1 864 759 21.82 1.22 0.75 0.86
10 B1 597 524 1.16 0.26 0.75 0.86
11 B2 3538 3110 16.80 37.14 0.75 0.86
12 B2 1601 1407 14.57 0.00 0.75 0.86
13 B2 1236 1087 3.59 0.71 0.75 0.86
14 B2 1064 936 1.00 0.02 0.75 0.86
15 B2 967 850 10.38 5.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10492.8 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 9222.1 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 mPW1PW91/STO-3G
ABC
0.32708 0.30569 0.15801

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/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 1.180 0.366
N3 0.000 -1.180 0.366
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
O11.42541.42542.19682.19683.24653.2465
N21.42542.35951.36022.28392.14013.3452
N31.42542.35952.28391.36023.34522.1401
C42.19681.36022.28391.42671.09402.2791
C52.19682.28391.36021.42672.27911.0940
H63.24652.14013.34521.09402.27912.8018
H73.24653.34522.14012.27911.09402.8018

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.092 O1 N3 C5 104.092
N2 O1 N3 111.711 N2 C4 C5 110.052
N2 C4 H6 121.011 N3 C5 C4 110.052
N3 C5 H7 121.011 C4 C5 H7 128.937
C5 C4 H6 128.937
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.009      
2 N -0.092      
3 N -0.092      
4 C -0.036      
5 C -0.036      
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 -2.540 2.540
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.632 0.000 0.000
y 0.000 -28.302 0.000
z 0.000 0.000 -24.001
Traceless
 xyz
x 0.519 0.000 0.000
y 0.000 -3.486 0.000
z 0.000 0.000 2.966
Polar
3z2-r25.933
x2-y22.670
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.850 0.000 0.000
y 0.000 3.597 0.000
z 0.000 0.000 3.716


<r2> (average value of r2) Å2
<r2> 74.683
(<r2>)1/2 8.642