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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: HF/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-260.587152
Energy at 298.15K 
HF Energy-260.587152
Nuclear repulsion energy166.475468
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3443 3135 0.06 92.13 0.08 0.16
2 A1 1653 1506 10.79 37.92 0.08 0.15
3 A1 1471 1340 6.20 19.36 0.10 0.18
4 A1 1161 1057 45.62 6.83 0.23 0.38
5 A1 1109 1010 0.24 2.78 0.06 0.11
6 A1 1002 913 34.76 3.40 0.12 0.21
7 A2 1004 915 0.00 0.31 0.75 0.86
8 A2 707 644 0.00 0.02 0.75 0.86
9 B1 962 876 39.61 0.36 0.75 0.86
10 B1 693 631 1.83 0.67 0.75 0.86
11 B2 3429 3122 0.07 52.02 0.75 0.86
12 B2 1795 1634 0.00 0.78 0.75 0.86
13 B2 1322 1204 2.42 0.98 0.75 0.86
14 B2 1127 1026 0.49 0.32 0.75 0.86
15 B2 1049 955 31.30 3.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10964.1 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 9983.9 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/aug-cc-pVDZ
ABC
0.36346 0.33519 0.17438

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.101
N2 0.000 1.101 0.353
N3 0.000 -1.101 0.353
C4 0.000 0.716 -0.865
C5 0.000 -0.716 -0.865
H6 0.000 1.414 -1.682
H7 0.000 -1.414 -1.682

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.33121.33122.09242.09243.12163.1216
N21.33122.20221.27742.18762.05873.2353
N31.33122.20222.18761.27743.23532.0587
C42.09241.27742.18761.43211.07452.2814
C52.09242.18761.27741.43212.28141.0745
H63.12162.05873.23531.07452.28142.8283
H73.12163.23532.05872.28141.07452.8283

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 106.648 O1 N3 C5 106.648
N2 O1 N3 111.614 N2 C4 C5 107.545
N2 C4 H6 121.936 N3 C5 C4 107.545
N3 C5 H7 121.936 C4 C5 H7 130.519
C5 C4 H6 130.519
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.763      
2 N -0.171      
3 N -0.171      
4 C 0.728      
5 C 0.728      
6 H -0.175      
7 H -0.175      


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 -3.738 3.738
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.888 0.000 0.000
y 0.000 -30.124 0.000
z 0.000 0.000 -25.314
Traceless
 xyz
x -1.168 0.000 0.000
y 0.000 -3.023 0.000
z 0.000 0.000 4.191
Polar
3z2-r28.383
x2-y21.236
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.750 0.000 0.000
y 0.000 5.955 0.000
z 0.000 0.000 6.301


<r2> (average value of r2) Å2
<r2> 70.762
(<r2>)1/2 8.412