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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: PBE1PBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31G**
 hartrees
Energy at 0K-245.759300
Energy at 298.15K 
HF Energy-245.759300
Nuclear repulsion energy162.715676
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 PBE1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3333 3177 0.16 108.77 0.10 0.18
2 A' 3310 3155 0.01 48.74 0.69 0.82
3 A' 3289 3135 1.54 88.24 0.39 0.56
4 A' 1642 1565 8.60 1.18 0.13 0.23
5 A' 1507 1437 32.70 28.70 0.33 0.50
6 A' 1433 1365 6.17 1.95 0.23 0.37
7 A' 1273 1214 7.87 11.23 0.25 0.39
8 A' 1187 1132 14.81 2.53 0.68 0.81
9 A' 1154 1100 8.56 10.35 0.19 0.32
10 A' 1064 1014 4.46 4.53 0.65 0.79
11 A' 961 916 34.66 5.53 0.14 0.24
12 A' 935 891 4.21 2.37 0.73 0.84
13 A' 928 885 3.89 2.50 0.74 0.85
14 A" 913 870 5.31 2.29 0.75 0.86
15 A" 876 835 0.02 0.31 0.75 0.86
16 A" 791 754 54.07 1.26 0.75 0.86
17 A" 659 629 1.41 0.51 0.75 0.86
18 A" 617 588 15.24 1.16 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12936.1 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 12329.4 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 PBE1PBE/6-31G**
ABC
0.33014 0.32361 0.16342

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.127 0.364 0.000
C2 0.612 -0.958 0.000
C3 0.000 1.121 0.000
N4 -0.696 -0.980 0.000
O5 -1.085 0.340 0.000
H6 2.155 0.691 0.000
H7 1.151 -1.897 0.000
H8 -0.187 2.186 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41881.35732.26532.21161.07932.26152.2457
C21.41882.16721.30862.13612.25831.08273.2434
C31.35732.16722.21391.33702.19803.23011.0808
N42.26531.30862.21391.37613.30542.06203.2068
O52.21162.13611.33701.37613.25933.16242.0526
H61.07932.25832.19803.30543.25932.77592.7790
H72.26151.08273.23012.06203.16242.77594.2963
H82.24573.24341.08083.20682.05262.77904.2963

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.260 C1 C2 H7 128.892
C1 C3 O5 110.344 C1 C3 H8 133.861
C2 C1 C3 102.622 C2 C1 H6 128.869
C2 N4 O5 105.407 C3 C1 H6 128.509
C3 O5 N4 109.367 N4 C2 H7 118.848
O5 C3 H8 115.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.295      
2 C 0.022      
3 C 0.129      
4 N -0.151      
5 O -0.316      
6 H 0.196      
7 H 0.203      
8 H 0.211      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.530 1.534 0.000 2.959
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.976 -2.502 0.000
y -2.502 -24.483 0.000
z 0.000 0.000 -29.611
Traceless
 xyz
x -0.929 -2.502 0.000
y -2.502 4.310 0.000
z 0.000 0.000 -3.381
Polar
3z2-r2-6.762
x2-y2-3.493
xy-2.502
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.923 -0.230 0.000
y -0.230 6.533 0.000
z 0.000 0.000 2.449


<r2> (average value of r2) Å2
<r2> 76.112
(<r2>)1/2 8.724