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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: HF/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-46.936543
Energy at 298.15K 
HF Energy-46.936543
Nuclear repulsion energy84.020603
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/CEP-31G
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 3524 3177 0.48 89.77 0.15 0.26
2 A1 1589 1432 9.57 32.21 0.16 0.28
3 A1 1442 1300 8.41 16.18 0.33 0.49
4 A1 1117 1007 0.89 3.20 0.04 0.09
5 A1 1080 973 20.00 9.06 0.30 0.47
6 A1 943 850 49.82 10.62 0.21 0.34
7 A2 1028 926 0.00 0.38 0.75 0.86
8 A2 701 632 0.00 0.02 0.75 0.86
9 B1 970 874 48.19 1.56 0.75 0.86
10 B1 639 576 0.51 1.74 0.75 0.86
11 B2 3506 3160 0.00 53.07 0.75 0.86
12 B2 1734 1563 0.73 2.11 0.75 0.86
13 B2 1323 1192 11.82 1.25 0.75 0.86
14 B2 1043 940 13.17 4.76 0.75 0.86
15 B2 1023 922 4.09 4.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10830.2 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 9762.4 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/CEP-31G
ABC
0.34607 0.31460 0.16479

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.140
N2 0.000 1.145 0.350
N3 0.000 -1.145 0.350
C4 0.000 0.731 -0.884
C5 0.000 -0.731 -0.884
H6 0.000 1.411 -1.709
H7 0.000 -1.411 -1.709

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.39111.39112.15232.15233.17893.1789
N21.39112.29071.30222.24632.07623.2823
N31.39112.29072.24631.30223.28232.0762
C42.15231.30222.24631.46261.06842.2952
C52.15232.24631.30221.46262.29521.0684
H63.17892.07623.28231.06842.29522.8214
H73.17893.28232.07622.29521.06842.8214

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 106.042 O1 N3 C5 106.042
N2 O1 N3 110.837 N2 C4 C5 108.539
N2 C4 H6 121.973 N3 C5 C4 108.539
N3 C5 H7 121.973 C4 C5 H7 129.488
C5 C4 H6 129.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.247      
2 N 0.151      
3 N 0.151      
4 C -0.313      
5 C -0.313      
6 H 0.285      
7 H 0.285      


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 -4.934 4.934
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.976 0.000 0.000
y 0.000 -31.631 0.000
z 0.000 0.000 -26.856
Traceless
 xyz
x 0.268 0.000 0.000
y 0.000 -3.715 0.000
z 0.000 0.000 3.447
Polar
3z2-r26.894
x2-y22.655
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.394 0.000 0.000
y 0.000 5.306 0.000
z 0.000 0.000 5.775


<r2> (average value of r2) Å2
<r2> 60.705
(<r2>)1/2 7.791