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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G
 hartrees
Energy at 0K-260.314397
Energy at 298.15K 
HF Energy-260.314397
Nuclear repulsion energy159.374580
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/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 3334 3212 5.86 82.50 0.10 0.18
2 A1 1399 1348 15.06 16.46 0.45 0.62
3 A1 1314 1266 5.03 12.51 0.21 0.34
4 A1 1062 1023 0.03 5.03 0.27 0.42
5 A1 976 940 3.44 5.05 0.46 0.63
6 A1 860 829 11.23 9.68 0.12 0.22
7 A2 958 923 0.00 2.29 0.75 0.86
8 A2 662 638 0.00 0.38 0.75 0.86
9 B1 890 858 56.68 1.01 0.75 0.86
10 B1 599 577 0.69 0.72 0.75 0.86
11 B2 3318 3196 0.22 52.15 0.75 0.86
12 B2 1535 1479 5.92 0.13 0.75 0.86
13 B2 1213 1169 12.19 0.79 0.75 0.86
14 B2 976 940 13.72 5.30 0.75 0.86
15 B2 783 754 0.78 0.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9938.5 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 9573.8 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/3-21G
ABC
0.33590 0.30573 0.16005

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 1.373 -1.739
H7 0.000 -1.373 -1.739

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.44781.44782.18382.18383.22143.2214
N21.44782.36361.31382.25832.08683.2930
N31.44782.36362.25831.31383.29302.0868
C42.18381.31382.25831.42741.07592.2531
C52.18382.25831.31381.42742.25311.0759
H63.22142.08683.29301.07592.25312.7454
H73.22143.29302.08682.25311.07592.7454

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 104.410 O1 N3 C5 104.410
N2 O1 N3 109.434 N2 C4 C5 110.873
N2 C4 H6 121.355 N3 C5 C4 110.873
N3 C5 H7 121.355 C4 C5 H7 127.772
C5 C4 H6 127.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.192      
2 N -0.183      
3 N -0.183      
4 C -0.007      
5 C -0.007      
6 H 0.287      
7 H 0.287      


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 -3.823 3.823
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.655 0.000 0.000
y 0.000 -29.918 0.000
z 0.000 0.000 -25.498
Traceless
 xyz
x -0.947 0.000 0.000
y 0.000 -2.841 0.000
z 0.000 0.000 3.788
Polar
3z2-r27.577
x2-y21.262
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 5.231 0.000
z 0.000 0.000 5.343


<r2> (average value of r2) Å2
<r2> 75.121
(<r2>)1/2 8.667