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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-259.067077
Energy at 298.15K 
HF Energy-259.067077
Nuclear repulsion energy161.650903
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 HF/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 3488 3148 5.59 79.88 0.09 0.17
2 A1 1595 1440 2.52 21.15 0.21 0.35
3 A1 1426 1287 11.16 12.42 0.52 0.69
4 A1 1078 973 0.56 2.62 0.12 0.22
5 A1 1040 939 4.68 4.28 0.50 0.67
6 A1 899 812 26.03 12.21 0.13 0.22
7 A2 1099 992 0.00 4.71 0.75 0.86
8 A2 710 641 0.00 0.12 0.75 0.86
9 B1 1008 910 49.02 0.43 0.75 0.86
10 B1 612 552 0.71 1.32 0.75 0.86
11 B2 3473 3135 0.04 52.54 0.75 0.86
12 B2 1749 1578 5.12 0.84 0.75 0.86
13 B2 1336 1206 12.45 1.04 0.75 0.86
14 B2 1061 958 16.84 4.67 0.75 0.86
15 B2 967 873 2.00 1.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10770.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 9721.4 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 HF/3-21G*
ABC
0.34716 0.31214 0.16436

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.160
N2 0.000 1.160 0.329
N3 0.000 -1.160 0.329
C4 0.000 0.722 -0.872
C5 0.000 -0.722 -0.872
H6 0.000 1.371 -1.713
H7 0.000 -1.371 -1.713

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.42711.42712.15642.15643.18373.1837
N21.42712.32091.27892.23292.05343.2529
N31.42712.32092.23291.27893.25292.0534
C42.15641.27892.23291.44361.06282.2558
C52.15642.23291.27891.44362.25581.0628
H63.18372.05343.25291.06282.25582.7425
H73.18373.25292.05342.25581.06282.7425

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.537 O1 N3 C5 105.537
N2 O1 N3 108.806 N2 C4 C5 110.060
N2 C4 H6 122.272 N3 C5 C4 110.060
N3 C5 H7 122.272 C4 C5 H7 127.668
C5 C4 H6 127.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.304      
2 N -0.175      
3 N -0.175      
4 C 0.015      
5 C 0.015      
6 H 0.311      
7 H 0.311      


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 -4.546 4.546
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.867 0.000 0.000
y 0.000 -30.552 0.000
z 0.000 0.000 -26.258
Traceless
 xyz
x -0.461 0.000 0.000
y 0.000 -2.990 0.000
z 0.000 0.000 3.451
Polar
3z2-r26.902
x2-y21.686
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.606 0.000 0.000
y 0.000 4.704 0.000
z 0.000 0.000 5.283


<r2> (average value of r2) Å2
<r2> 73.980
(<r2>)1/2 8.601