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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-261.812129
Energy at 298.15K 
HF Energy-261.812129
Nuclear repulsion energy161.982437
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 PBEPBEultrafine/aug-cc-pVDZ
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 3210 3191 0.54 119.61 0.08 0.15
2 A1 1414 1406 15.21 14.67 0.30 0.47
3 A1 1298 1290 2.41 26.27 0.03 0.05
4 A1 1034 1027 3.25 5.47 0.34 0.50
5 A1 1003 997 12.65 9.57 0.09 0.16
6 A1 870 864 17.92 6.72 0.11 0.19
7 A2 853 847 0.00 0.05 0.75 0.86
8 A2 636 632 0.00 0.14 0.75 0.86
9 B1 815 810 43.02 0.00 0.75 0.86
10 B1 637 633 1.35 0.19 0.75 0.86
11 B2 3195 3176 0.26 64.88 0.75 0.86
12 B2 1517 1507 0.01 0.02 0.75 0.86
13 B2 1140 1133 4.95 0.64 0.75 0.86
14 B2 932 926 18.16 2.40 0.75 0.86
15 B2 774 769 6.83 0.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9663.4 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 9604.4 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.34410 0.31863 0.16544

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.135
N2 0.000 1.144 0.359
N3 0.000 -1.144 0.359
C4 0.000 0.713 -0.889
C5 0.000 -0.713 -0.889
H6 0.000 1.418 -1.723
H7 0.000 -1.418 -1.723

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.38211.38212.14532.14533.19053.1905
N21.38212.28821.32062.23742.10073.3020
N31.38212.28822.23741.32063.30202.1007
C42.14531.32062.23741.42551.09282.2885
C52.14532.23741.32061.42552.28851.0928
H63.19052.10073.30201.09282.28852.8364
H73.19053.30202.10072.28851.09282.8364

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.059 O1 N3 C5 105.059
N2 O1 N3 111.753 N2 C4 C5 109.065
N2 C4 H6 120.727 N3 C5 C4 109.065
N3 C5 H7 120.727 C4 C5 H7 130.208
C5 C4 H6 130.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.435      
2 N -0.229      
3 N -0.229      
4 C 0.794      
5 C 0.794      
6 H -0.347      
7 H -0.347      


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 -3.258 3.258
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.871 0.000 0.000
y 0.000 -30.287 0.000
z 0.000 0.000 -25.556
Traceless
 xyz
x -0.949 0.000 0.000
y 0.000 -3.074 0.000
z 0.000 0.000 4.023
Polar
3z2-r28.045
x2-y21.417
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.065 0.000 0.000
y 0.000 7.197 0.000
z 0.000 0.000 6.922


<r2> (average value of r2) Å2
<r2> 73.609
(<r2>)1/2 8.580