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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-260.512680
Energy at 298.15K 
HF Energy-260.512680
Nuclear repulsion energy159.389680
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 mPW1PW91/3-21G
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 3340 3188 5.88 82.71 0.10 0.18
2 A1 1400 1336 15.17 16.52 0.45 0.62
3 A1 1315 1255 4.93 12.55 0.20 0.34
4 A1 1061 1013 0.02 4.83 0.26 0.41
5 A1 976 932 3.65 5.13 0.46 0.63
6 A1 862 823 11.36 9.60 0.12 0.22
7 A2 961 917 0.00 2.27 0.75 0.86
8 A2 661 631 0.00 0.37 0.75 0.86
9 B1 893 852 57.27 0.95 0.75 0.86
10 B1 597 570 0.69 0.73 0.75 0.86
11 B2 3323 3172 0.21 52.32 0.75 0.86
12 B2 1537 1467 5.84 0.14 0.75 0.86
13 B2 1215 1160 12.03 0.79 0.75 0.86
14 B2 976 931 13.75 5.31 0.75 0.86
15 B2 790 754 0.70 0.45 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9952.4 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 9500.5 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 mPW1PW91/3-21G
ABC
0.33604 0.30569 0.16007

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.175
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 1.372 -1.738
H7 0.000 -1.372 -1.738

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.44781.44782.18362.18363.22033.2203
N21.44782.36371.31352.25832.08563.2920
N31.44782.36372.25831.31353.29202.0856
C42.18361.31352.25831.42781.07492.2526
C52.18362.25831.31351.42782.25261.0749
H63.22032.08563.29201.07492.25262.7446
H73.22033.29202.08562.25261.07492.7446

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.413 O1 N3 C5 104.413
N2 O1 N3 109.431 N2 C4 C5 110.872
N2 C4 H6 121.356 N3 C5 C4 110.872
N3 C5 H7 121.356 C4 C5 H7 127.772
C5 C4 H6 127.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.195      
2 N -0.184      
3 N -0.184      
4 C -0.008      
5 C -0.008      
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 -3.858 3.858
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.636 0.000 0.000
y 0.000 -29.878 0.000
z 0.000 0.000 -25.459
Traceless
 xyz
x -0.967 0.000 0.000
y 0.000 -2.830 0.000
z 0.000 0.000 3.797
Polar
3z2-r27.595
x2-y21.242
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.688 0.000 0.000
y 0.000 5.225 0.000
z 0.000 0.000 5.339


<r2> (average value of r2) Å2
<r2> 75.089
(<r2>)1/2 8.665