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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-245.945459
Energy at 298.15K 
HF Energy-245.945459
Nuclear repulsion energy162.323534
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 B3PW91/6-31G**
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' 3314 3176 0.12      
2 A' 3289 3152 0.00      
3 A' 3267 3131 1.58      
4 A' 1624 1556 8.41      
5 A' 1491 1429 31.36      
6 A' 1418 1359 5.59      
7 A' 1259 1207 7.06      
8 A' 1171 1123 16.79      
9 A' 1142 1094 8.01      
10 A' 1056 1012 5.17      
11 A' 939 900 23.63      
12 A' 924 885 4.91      
13 A' 921 883 11.15      
14 A" 908 871 5.16      
15 A" 871 835 0.05      
16 A" 786 754 52.01      
17 A" 653 625 1.75      
18 A" 612 586 14.18      

Unscaled Zero Point Vibrational Energy (zpe) 12821.5 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 12288.1 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 B3PW91/6-31G**
ABC
0.32867 0.32196 0.16264

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.127 0.366 0.000
C2 0.615 -0.959 0.000
C3 0.000 1.124 0.000
N4 -0.696 -0.986 0.000
O5 -1.089 0.341 0.000
H6 2.156 0.692 0.000
H7 1.157 -1.896 0.000
H8 -0.184 2.189 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42031.35882.26982.21601.07872.26142.2456
C21.42032.17191.31112.14292.25821.08253.2474
C31.35882.17192.22201.34072.19853.23391.0804
N42.26981.31112.22201.38423.30872.06453.2160
O52.21602.14291.34071.38423.26303.16992.0572
H61.07872.25822.19853.30873.26302.77342.7771
H72.26141.08253.23392.06453.16992.77344.2989
H82.24563.24741.08043.21602.05722.77714.2989

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.343 C1 C2 H7 128.761
C1 C3 O5 110.348 C1 C3 H8 133.716
C2 C1 C3 102.776 C2 C1 H6 128.763
C2 N4 O5 105.285 C3 C1 H6 128.460
C3 O5 N4 109.248 N4 C2 H7 118.896
O5 C3 H8 115.937
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.242      
2 C 0.080      
3 C 0.179      
4 N -0.164      
5 O -0.320      
6 H 0.146      
7 H 0.157      
8 H 0.165      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.541 1.524 0.000 2.963
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.972 -2.493 0.000
y -2.493 -24.463 0.000
z 0.000 0.000 -29.497
Traceless
 xyz
x -0.992 -2.493 0.000
y -2.493 4.271 0.000
z 0.000 0.000 -3.279
Polar
3z2-r2-6.557
x2-y2-3.509
xy-2.493
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.991 -0.235 0.000
y -0.235 6.637 0.000
z 0.000 0.000 2.481


<r2> (average value of r2) Å2
<r2> 76.344
(<r2>)1/2 8.738